[out-uh
v-boundz] 
| 1. | Sports. being beyond or passing the limits or boundaries of a field, course, etc., marking the area within which the ball, puck, or the like is legally in play. |
| 2. | beyond any established boundaries or prescribed limits; prohibited; forbidden. |
| 3. | further than or beyond established limits, as of behavior or thought. |
[bound] | 1. | Usually, bounds. limit or boundary: the bounds of space and time; within the bounds of his estate; within the bounds of reason. |
| 2. | something that limits, confines, or restrains. |
| 3. | bounds,
|
| 4. | Mathematics. a number greater than or equal to, or less than or equal to, all the numbers in a given set. Compare greatest lower bound, least upper bound, lower bound, upper bound. |
| 5. | to limit by or as if by bounds; keep within limits or confines. |
| 6. | to form the boundary or limit of. |
| 7. | to name or list the boundaries of. |
| 8. | to abut. |
| 9. | out of bounds,
|
out of bounds
Beyond established limits, breaking the rules, unreasonable. For example, Calling the teacher a liar
that's out of bounds. This expression alludes to the boundaries of the playing area in numerous sports and to the rules applying to them. Its figurative use dates from the 1940s. [Early 1800s] Also see within bounds.