1580s, of diseases, "communicating, infectious," present-participle adjective from catch (v.). From 1650s as "captivating." Related: Catchingly.
c. 1200, "to take, capture," from Anglo-French or Old North French cachier "catch, capture" animals (Old French chacier "hunt, pursue, drive" animals, Modern French chasser "to hunt"), from Vulgar Latin *captiare "try to seize, chase" (also source of Spanish cazar, Italian cacciare), from Latin captare "to take, hold," frequentative of capere "to take, hold" (from PIE root *kap- "to grasp"). A doublet of chase (v.).
Its senses in early Middle English also included "to chase, hunt," which later went with chase (v.). Of sleep, etc., from early 14c.; of infections from 1540s; of fire from 1734 (compare Greek aptō "fasten, join, attach, grasp, touch," also "light, kindle, set on fire, catch on fire"). Related: Catched (obsolete); catching; caught.
The meaning "act as a catcher in baseball" is recorded from 1865. To catch on "apprehend, understand" is by 1884, American English colloquial. To catch the eye "draw the attention" is attested by 1718. Catch as catch can has roots in late 14c. (cacche who that cacche might).
"device for catching and retaining," especially "a fastening for a door," late 13c., probably from latch (v.).
late 14c., "device to hold a latch of a door," also "a trap;" also "a fishing vessel," from catch (v.). The meaning "action of catching" is attested from 1570s. The meaning "that which is caught or worth catching" (later especially of spouses) is from 1590s. The sense of "hidden cost, qualification, etc.; something by which the unwary may be entrapped" is slang first attested 1855 in writings of P.T. Barnum.