Definition of: behind

(bi·hīnd′) adverb
1. In, toward, or at the rear; backward: looking behind.
2. In a previous place, condition, etc.: They left their regrets behind.
3. In time gone by: The days of youth are behind.
4. In reserve; to be made known: There is no evidence behind.
5. In arrears; not according to schedule: to fall behind in one's work.
6. Retarded in time, as a train or clock.
—prep.
1. At the back or farther side of: The house is behind those trees.
2. To or toward the rear: Look behind you as you come.
3. Following after: The infantry came behind the cavalry.
4. Remaining after: He left a fortune behind him.
5. Later than: He stayed behind the others that day.
6. Sustaining; supporting: He has wealth behind him.
7 Inferior to, as in position, accomplishments, etc.; not so well advanced as: He is behind the others in his lessons.
8. Not yet revealed or made known about: something strange behind that remark.
—to put behind one To refuse to accept or consider.
—noun Colloq. The buttocks. [OE behindan]