Lobster, for example (10)
I believe the answer is:
crustacean
'lobster for example' is the definition.
(lobster is a kind of crustacean)
This is the entire clue.
(Other definitions for crustacean that I've seen before include "crab, for example?" , "crab maybe" , "Such as a barnacle" , "seafood" , "Lobster perhaps" .)