limit (n.) Look up limit at Dictionary.com
c.1400, "boundary, frontier," from Old French limite "a boundary," from Latin limitem (nominative limes) "a boundary, limit, border, embankment between fields," related to limen "threshold." Originally of territory; general sense from early 15c. Colloquial sense of "the very extreme, the greatest degree imaginable" is from 1904.
limit (v.) Look up limit at Dictionary.com
late 14c., from Old French limiter "mark (a boundary), restrict; specify," from Latin limitare "to bound, limit, fix," from limes "boundary, limit" (see limit (n.)). Related: limited; limiting.