1. (preposition)from indicates where sb or sth starts The baby walked from his mother to his father.; The package came from Italy.; a bus from New York City
2. from given or provided by sb an email from my brother; a present from Dan
3. from indicates origin Where are you from?; students from Emerson College; a boy from a working-class family; an object from ancient Egypt; energy that comes from wind
4. from indicates a startingtime The park is open from sunrise to sunset.
5. from from now/today/then on starting now/today/then and continuing into the future From now on, there will be no more fighting.
6. from indicates a distance The library's not far from here.
7. from indicates a range or variety people from age 2 to 92; We bought everything from old records to fresh flowers.
8. from indicates the substance of which sth is made a chair made from recycled plastic
9. from because of, or as a result of She suffers from panic attacks.; I knew from her voice that she was mad.
10. from indicates location She's calling from school.; I can see you from here.
11. from indicates the startingpoint of a change She seemed to change from a girl to a woman overnight.
12. from indicates what is prevented to stop her from hurting herself; I tried to keep myself from laughing.
Definition of 'from'
Webster Dictionary
1. from out of the neighborhood of; lessening or losing proximity to; leaving behind; by reason of; out of; by aid of; -- used whenever departure, setting out, commencement of action, being, state, occurrence, etc., or procedure, emanation, absence, separation, etc., are to be expressed. It is construed with, and indicates, the point of space or time at which the action, state, etc., are regarded as setting out or beginning; also, less frequently, the source, the cause, the occasion, out of which anything proceeds; -- the aritithesis and correlative of to; as, it, is one hundred miles from Boston to Springfield; he took his sword from his side; lightproceeds from the sun; separate the coarse wool from the fine; men have all sprung from Adam, and often go from good to bad, and from bad to worse; the merit of an action depends on the principle from which it proceeds; men judge of facts from personal knowledge, or from testimony
Sense: used before the place, thing, person, time etc that is the point at which an action, journey, period of time etc begins from Europe to Asia; from Monday to Friday; a letter from her father.
Definitions of from 
Afrikaans: vanaf
Arabic: مِن
Bulgarian: от
Brazilian: de
Czech: z, od
German: von
Danish: fra
Greek: από
Spanish: de
Estonian: -st, -lt
Farsi: از
Finnish: luota, alkaen, -sta, -stä
French: de
Hebrew: מִן
Hindi: से
Croatian: od
Hungarian: -ból, -ből; -tól, -től; -
Indonesian: dari
Icelandic: frá
Italian: da
Japanese: ～から
Korean: (운동·동작 따위의 시발점, 기점) …에서
Lithuanian: iš, nuo
Latvian: (norāda virzienu, atstatu
Malay: dari
Dutch: van
Norwegian: fra
Polish: z
Persian: از
Pashto: له، ده، ورڅخه، ورڅخه، له 
Portuguese: de
Romanian: de la; din; de
Russian: из; с; от
Slovak: od
Slovenian: iz, od
Serbian: od
Swedish: från
Thai: ตั้งแต่
Turkish: ...-den
Taiwanese: 從
Ukrainian: з
Urdu: جس سے یا جہاں سے آغاذ ہو
Vietnamese: từ
Chinese: 从
