clock (someone or something) at (a certain speed)(redirected from clock one at)
clock (someone or something) at (a certain speed)
To track the speed at which someone or something moves. (The speed is stated after "at.") You're getting a ticket because I clocked you at 90 miles an hour—and the speed limit here is only 55.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
clock someone or something at something
to measure the speed of someone or something to be a certain figure. I clocked the runner at a record speed for the race. Karen clocked the race at three minutes flat.
See also: clock
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.