Entries linking to unplace
More or less confused with un- (1) through similarity in the notions of "negation" and "reversal;" an adjective such as unlocked might represent "not locked" (un- (1)) or the past tense of unlock (un- (2)).
mid-15c., placen, "to determine the position of;" also "to put (something) in a particular place or position," from place (n.). The meaning "put or set (a number of things) in position or order, arrange" is from 1540s. Related: Placed; placing.
Sense of "to find a home, situation, marriage, etc. for" is from 1590s. The horse racing sense of "to achieve a certain position" (usually in the top three finishers; in U.S., specifically second place) is attested by 1924, from earlier meaning "to state the position of" (among the first three finishers), 1826.