To form the boundary of; be contiguous to; SYN. border.

ETYM Past p. of Old Eng. bounen to prepare, from boun ready, prepared, from Icel. bűinn, p. p. of bűa to dwell, prepare; akin to Eng. boor and bower. Related to Bond, Busk.
1. Confined by bonds.
2. Bound by an oath.
3. Being under moral or legal obligation; SYN. compelled, constrained, obligate.
4. (Usually followed by 'to') Governed by fate; SYN. destined.
5. (Chemistry and physics) Held with another element, substance or material in chemical or physical union.
6. Secured with a cover or binding; often used as a combining form.
7. Confined in the bowels.
8. Headed or intending to head in a certain direction; often used as a combining form; SYN. destined.

The upper or lower limit in a permitted range of values.

Limited in performance or speed; for example, an input/output-bound system is limited by the speed of its input and output devices (keyboard, disk drives, and so on), even though the processor or program is capable of performing at a higher rate.