1. (prep.)behind at or toward the rear of: behind the house.
2. behind later than; after: behind schedule.
3. behind in the state of making less progress than: fell behind the competition.
4. behind on the farther side of; beyond: behind the mountain.
5. behind in a role of originating or supporting: Who's behind this program?
6. behind hidden or not revealed by: Malice lay behind her smile.
7. behind as a cause or latent feature of: Fear lay behind their anger.
8. behind at the controls of: behind the wheel of a car.
9. (adv.)behind at or toward the rear.
10. behind in a place or stage already passed.
11. behind in arrears: to be behind in one's rent.
12. behind slow; late: We're running an hour behind.
13. behind in a situation existing afterward: left behind a large family.
14. behind Archaic. in reserve; to come.
15. (adj.)behind following: the one behind.
16. (n.)behind Informal. the buttocks.
Etymology: (bef. 900; ME behinde(n), OE behindan)
Definition of 'behind'
Princeton's WordNet
1. (adj)buttocks, nates, arse, butt, backside, bum, buns, can, fundament, hindquarters, hind end, keister, posterior, prat, rear, rear end, rump, stern, seat, tail, tail end, tooshie, tush, bottom, behind, derriere, fanny, ass the fleshy part of the human body that you sit on "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?"
2. (adverb)behind(p) having the lower score or lagging position in a contest "behind by two points"; "the 8th inning found the home team trailing"
3. (adverb)behind in or to or toward the rear "he followed behind"; "seen from behind, the house is more imposing than it is from the front"; "the final runners were far behind"
4. (adverb)behind remaining in a place or condition that has been left or departed from "when he died he left much unfinished work behind"; "left a large family behind"; "the children left their books behind"; "he took off with a squeal of tires and left the other cars far behind"
5. (adverb)behind, slow of timepieces "the clock is almost an hour slow"; "my watch is running behind"
6. (adverb)behind in or into an inferior position "fell behind in his studies"; "their business was lagging behind in the competition for customers"
7. (adverb)behind, behindhand, in arrears in debt "he fell behind with his mortgage payments"; "a month behind in the rent"; "a company that has been run behindhand for years"; "in arrears with their utility bills"
1. (preposition)behind ≠ in front of I found it behind the sofa.
2. behind right behind directly behind the car right behind me
3. behind progressing more slowly, or being less advanced students who are behind the rest of the class; two points behind the other team
4. behind behind schedule progressing more slowly than expected two months behind schedule
5. behind responsible for sth the person behind the idea
6. behind supporting and encouraging We're behind you, whatever you decide.
7. behind behind sb's back when sb is not there to hear He's been criticizing me behind my back.
8. behind behind the times not modern an education system that is behind the times
9. (adverb)behind ≠ in front to walk along behind; They hit me from behind.
10. behind where sth was previously Mary left the camera behind.
11. behind late or slow in making progress I'm behind with my rent.; kids falling behind in school
Definition of 'behind'
Webster Dictionary
1. (adj)behind on the side opposite the front or nearest part; on the back side of; at the back of; on the other side of; as, behind a door; behind a hill
2. (adj)behind left after the departure of, whether this be by removing to a distance or by death
3. (adj)behind left a distance by, in progress of improvement Hence: Inferior to in dignity, rank, knowledge, or excellence, or in any achievement
4. (adverb)behind at the back part; in the rear
5. (adverb)behind toward the back part or rear; backward; as, to look behind
6. (adverb)behind not yet brought forward, produced, or exhibited to view; out of sight; remaining
7. (adverb)behind backward in time or order of succession; past
8. (adverb)behind after the departure of another; as, to stay behind
Definitions of behind 
Afrikaans: agter
Arabic: خَلْف، وَراء
Bulgarian: зад
Brazilian: atrás de
Czech: za
German: hinter
Danish: bag; bag på
Greek: πίσω από
Spanish: detrás de
Estonian: taga, taha
Farsi: در پشت؛ در عقب
Finnish: takana
French: derrière
Hebrew: מֵאֲחוֹרֵי
Hindi: के पीछे
Croatian: iza
Hungarian: mögött, mögé
Indonesian: di belakang
Icelandic: fyrir aftan,á bak við
Italian: dietro
Japanese: ～のうしろに
Korean: ...의 뒤(쪽)에
Lithuanian: už
Latvian: aiz
Malay: belakang
Dutch: achter
Norwegian: bak, bakpå
Polish: za
Persian: در پشت؛ در عقب
Pashto: تر شا
Portuguese: atrás de
Romanian: în spatele
Russian: за, сзади, позади
Slovak: za
Slovenian: za
Serbian: iza
Swedish: bakom
Thai: ข้างหลัง
Turkish: arkasına arkasında
Taiwanese: 在...之後
Ukrainian: ззаду, за
Urdu: پیچھے
Vietnamese: đằng sau
Chinese: 在...之后
