Unit of time (6)
'unit of time' is the definition.
(I know that second is a unit of time)
This is the entire clue.
(Other definitions for second that I've seen before include "Short period of time" , "jiffy" , "Flash" , "Not first team (6,6) - See 25" , "Support, assist" .)
'unit of time' is the definition.
(minute is a kind of unit of time)
This is all the clue.
(Other definitions for minute that I've seen before include "Little -- 60 18 across" , "A few ticks" , "Short period of time" , "Brief jotting" , "Formal note" .)
'unit of time' is the definition.
(hour is a kind of unit of time)
This is all the clue.
(Other definitions for hour that I've seen before include "occasion" , "Unit of time" , "(Period of) time" , "When it cometh, so doth the man!" , "60 minutes" .)