Supposedly from an Old English scir-lock "bright-lock". One of a group of surnames originally denoting hair colour, parallel to Blacklock, Harlock (har "grey"), Silverlock.
- An English surname
- A rare male given name transferred from the surname.
- (humorous) A detective (from Sherlock Holmes), especially used ironically to address somebody who has stated the obvious.
- Percy Hide Reaney, The Origin of English Surnames, Percy Hide Reaney, Routledge, 1967, p. 235