Kitchen counter? (5)
(Other definitions for worktop that I've seen before include "Kitchen unit surface" , "Surface in kitchen for preparation, etc" , "Surface on which to toil" , "Practical surface" , "E.g. kitchen surface" .)
'kitchen counter?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for timer that I've seen before include "Clocklike device" , "One may have the minutes" , "Preset activator" , "one of 14 [CUCKOO CLOCKS]" , "Clock, say" .)