11. (verb)chief(a), main(a), primary(a), principal(a), master(a) most important element "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch"
12. (verb)master, get the hang be or become completely proficient or skilled in "She mastered Japanese in less than two years"
13. (verb)overcome, get over, subdue, surmount, master get on top of; deal with successfully "He overcame his shyness"
14. (verb)dominate, master have dominance or the power to defeatover "Her pain completely mastered her"; "The methods can master the problems"
15. (verb)master, control have a firmunderstanding or knowledge of; be on top of "Do you control these data?"
1. (noun)master a man who leads or controls other people or animals When called the dogs runs to his master.
2. master an expert or sb who is very skilled at sth a master builder; He's a master of persuasion.
3. master an original of a document, photo, etc. used to make copies from the master copy
4. (verb)master to become skilled at She finally mastered walking at the age of about 15 months.
5. master to get control of, or overcome Will humans ever master their environment?
Definition of 'Master'
Webster Dictionary
1. (noun)Master a vessel having (so many) masts; -- used only in compounds; as, a two-master
2. (noun)Master a male person having another livingbeing so far subject to his will, that he can, in the main, control his or its actions; -- formerly used with much more extensive application than now. (a) The employer of a servant. (b) The owner of a slave. (c) The person to whom an apprentice is articled. (d) A sovereign, prince, or feudal noble; a chief, or one exercising similar authority. (e) The head of a household. (f) The male head of a school or college. (g) A male teacher. (h) The director of a number of persons performing a ceremony or sharing a feast. (i) The owner of a docile brute, -- especially a dog or horse. (j) The controller of a familiar spirit or other supernatural being
3. (noun)Master one who uses, or controls at will, anything inanimate; as, to be master of one's time
4. (noun)Master one who has attained greatskill in the use or application of anything; as, a master of oratorical art
5. (noun)Master a title given by courtesy, now commonly pronounced mister, except when given to boys; -- sometimes written Mister, but usually abbreviated to Mr
6. (noun)Master a young gentleman; a lad, or small boy
7. (noun)Master the commander of a merchant vessel; -- usually called captain. Also, a commissioned officer in the navy ranking next above ensign and below lieutenant; formerly, an officer on a man-of-war who had immediate charge, under the commander, of sailing the vessel
8. (noun)Master a personholding an office of authority among the Freemasons, esp. the presiding officer; also, a person holding a similar office in other civic societies
9. (verb)Master to become the master of; to subject to one's will, control, or authority; to conquer; to overpower; to subdue
10. (verb)Master to gain the command of, so as to understand or apply; to become an adept in; as, to master a science
Definitions of Master 
Afrikaans: meester, baas
Arabic: سَيِّد
Bulgarian: господар
Brazilian: senhor
Czech: pán, paní
German: der/die Herr(in)
Danish: herre
Greek: κύριος, αφέντης, κυρίαρχο
Spanish: señor, dueño; señora, due
Estonian: peremees
Farsi: مدیر
Finnish: herra
French: maître
Hebrew: שַׁלִיט
Hindi: उस्ताद, शिक्षक
Croatian: gazda
Hungarian: úr
Indonesian: tuan
Icelandic: yfirmaður; herra, húsbónd
Italian: padrone
Japanese: 主人
Korean: 주인
Lithuanian: šeimininkas
Latvian: saimnieks; kungs
Malay: tuan
Dutch: baas
Norwegian: herre; frue
Polish: pan, gospodarz
Persian: مدیر
Pashto: ماستر ،مدير
Portuguese: senhor
Romanian: stăpân
Russian: хозяин
Slovak: pán, pani
Slovenian: gospodar
Serbian: gospodar
Swedish: husbonde, husfader, herre
Thai: ผู้ควบคุม
Turkish: patron, hâkim
Taiwanese: 主人；主宰
Ukrainian: хазяїн, господар
Urdu: آقا، مالک
Vietnamese: chủ nhân
Chinese: 主人，主宰
