1. (noun)part, portion, component part, component, constituent something determined in relation to something that includes it "he wanted to feel a part of something bigger than himself"; "I read a portion of the manuscript"; "the smaller component is hard to reach"; "the animal constituent of plankton"
2. (noun)part, portion something less than the whole of a human artifact "the rear part of the house"; "glue the two parts together"
3. (noun)part, piece a portion of a natural object "they analyzed the river into three parts"; "he needed a piece of granite"
4. (noun)part that which concerns a person with regard to a particular role or situation "it requires vigilance on our part"; "they resisted every effort on his part"
5. (noun)region, part the extended spatial location of something "the farming regions of France"; "religions in all parts of the world"; "regions of outer space"
6. (noun)function, office, part, role the actions and activities assigned to or required or expected of a person or group "the function of a teacher"; "the government must do its part"; "play its role"
7. (noun)character, role, theatrical role, part, persona an actor's portrayal of someone in a play "she played the part of Desdemona"
8. (noun)share, portion, part, percentage assets belonging to or due to or contributed by an individual person or group "he wanted his share in cash"
9. (noun)part, section, division one of the portions into which something is regarded as divided and which together constitute a whole "the written part of the exam"; "the finance section of the company"; "the BBC's engineering division"
10. (noun)part, parting a line of scalp that can be seen when sections of hair are combed in opposite directions "his part was right in the middle"
11. (noun)part, voice the melody carried by a particular voice or instrument in polyphonic music "he tried to sing the tenor part"
12. (verb)contribution, part, share the part played by a person in bringing about a result "I am proud of my contribution in advancing the project"; "they all did their share of the work"
13. (verb)separate, part, split go one's own way; move apart "The friends separated after the party"
14. (verb)separate, part, split up, split, break, break up discontinue an association or relation; go different ways "The business partners broke over a tax question"; "The couple separated after 25 years of marriage"; "My friend and I split up"
15. (verb)depart, part, start, start out, set forth, set off, set out, take off leave "The family took off for Florida"
16. (verb)separate, divide, part come apart "The two pieces that we had glued separated"
17. (adverb)separate, disunite, divide, part force, take, or pull apart "He separated the fighting children"; "Moses parted the Red Sea"
18. (adverb)partially, partly, part in part; in some degree; not wholly "I felt partly to blame"; "He was partially paralyzed"
Definitions of 'part'
Webster 1913 Dictionary
1. (adverb)part partly; in a measure
2. (noun)part one of the portions, equal or unequal, into which anything is divided, or regarded as divided; something less than a whole; a number, quantity, mass, or the like, regarded as going to make up, with others, a larger number, quantity, mass, etc., whether actually separate or not; a piece; a fragment; a fraction; a division; a member; a constituent
3. (noun)part an equal constituent portion; one of several or many like quantities, numbers, etc., into which anything is divided, or of which it is composed; proportional division or ingredient
4. (noun)part a constituent portion of a living or spiritual whole; a member; an organ; an essential element
5. (noun)part a constituent of character or capacity; quality; faculty; talent; -- usually in the plural with a collective sense
6. (noun)part quarter; region; district; -- usually in the plural
7. (noun)part such portion of any quantity, as when taken a certain number of times, will exactly make that quantity; as, 3 is a part of 12; -- the opposite of multiple. Also, a line or other element of a geometrical figure
8. (noun)part that which belongs to one, or which is assumed by one, or which falls to one, in a division or apportionment; share; portion; lot; interest; concern; duty; office
9. (noun)part one of the opposing parties or sides in a conflict or a controversy; a faction
10. (noun)part a particular character in a drama or a play; an assumed personification; also, the language, actions, and influence of a character or an actor in a play; or, figuratively, in real life. See To act a part, under Act
11. (noun)part one of the different melodies of a concerted composition, which heard in union compose its harmony; also, the music for each voice or instrument; as, the treble, tenor, or bass part; the violin part, etc
12. (noun)part to divide; to separate into distinct parts; to break into two or more parts or pieces; to sever
13. (noun)part to divide into shares; to divide and distribute; to allot; to apportion; to share
14. (noun)part to separate or disunite; to cause to go apart; to remove from contact or contiguity; to sunder
15. (noun)part hence: To hold apart; to stand between; to intervene betwixt, as combatants
16. (noun)part to separate by a process of extraction, elimination, or secretion; as, to part gold from silver
17. (noun)part to leave; to quit
18. (verb)part to be broken or divided into parts or pieces; to break; to become separated; to go asunder; as, rope parts; his hair parts in the middle
19. (verb)part to go away; to depart; to take leave; to quit each other; hence, to die; -- often with from
20. (verb)part to perform an act of parting; to relinquish a connection of any kind; -- followed by with or from
21. (verb)part to have a part or share; to partake
Definition of part 
