Like lacework (6)
I believe the answer is:
'like lacework' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dainty that I've seen before include "Delicate, tasteful" , "Fastidious" , "Delicate, neat" , "Petite and elegant" , "Delicately small and pretty" .)