- a person who times racehorses during tryouts to determine their speed.
- an official who times a race.
- a person who maintains a record of the flow of traffic, as of visitors to a museum.
Origin of clocker
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for clocker
When the issue was out, Clocker waited around the main newsstands on Broadway.
Saddened and defeated, Clocker went through his accumulated mail.
"Okay, you were right and I was wrong," Clocker told the board of directors.
Clocker lifted himself out of the chair and went to the door.
Unable to see the direction of the con, Clocker felt irritated.