"i" lid (3)
I believe the answer is:
dot
'i lid?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dot that I've seen before include "One signal used in Morse code" , "Tiny speck" , "Little girl" , "Internet punctuation mark" , "Shorter of the two signals used in Morse code" .)