parasitic blood-sucking arachnid animal, Old English ticia, from West Germanic *tik- (cf. Middle Dutch teke, Dutch teek, Old High German zecho, German Zecke "tick"), of unknown origin. French tique (mid-15c.), Italian zecca are Germanic loan-words.
mid-15c., "light touch or tap," probably from tick (v.) and cognate with Dutch tik, Middle High German zic, and perhaps echoic. Meaning "sound made by a clock" is probably first recorded 1540s; tick-tock is recorded from 1848.
"credit," 1640s, shortening of ticket (n.).
early 13c., "to touch or pat," perhaps from an Old English verb corresponding to tick (n.2), and perhaps ultimately echoic. Cf. Old High German zeckon "to pluck," Dutch tikken "to pat," Norwegian tikke "touch lightly." Related: Ticked; ticking.
To tick (someone) off is from 1915, originally "to reprimand, scold." The verbal phrase tick off was in use in several senses at the time: as what a telegraph instrument does when it types out a message (1873), as what a clock does in marking the passage of time (1846), to enumerate on one's fingers (1899), and in accountancy, etc., "make a mark beside an item on a sheet with a pencil, etc.," often indicating a sale (by 1881). This might be the direct source of the phrase, perhaps via World War I military bureaucratic sense of being marked off from a list as "dismissed" or "ineligible." Meaning "to annoy" is recorded from 1975.
tick 2 (tĭk)
Any of numerous small bloodsucking parasitic arachnids of the families Ixodidae and Argasidae, many of which transmit febrile diseases, such as Rocky Mountain spotted fever and Lyme disease.
Any of various usually wingless, louselike insects of the family Hippobosciddae that are parasitic on sheep, goats, and other animals.
Any of numerous small, parasitic arachnids of the suborder Ixodida that feed on the blood of animals. Like their close relatives the mites and unlike spiders, ticks have no division between cephalothorax and abdomen. Ticks differ from mites by being generally larger and having a sensory pit at the end of their first pair of legs. Many ticks transmit febrile diseases, such as Rocky Mountain spotted fever and Lyme disease.
Credit: plenty of canned goods and plenty of tick at the store
[1642+; fr ticket]