Follow singular conversation? (5)
I believe the answer is:
stalk
'follow' is the definition.
(stalk is a kind of follow)
'singular conversation?' is the wordplay.
'singular' becomes 's' (abbreviation sometimes used in dictionaries).
'conversation?' becomes 'talk' (talk is a kind of conversation).
's'+'talk'='STALK'
(Other definitions for stalk that I've seen before include "Follow prey stealthily" , "Follow sneakily" , "Quietly pursue" , "Stem; pursue stealthily" , "Stem of plant" .)