A number lead lazily and greedily (6)
I believe the answer is:
avidly
'greedily' is the definition.
(I've seen this before)
'a number lead lazily' is the wordplay.
'number' becomes 'v' (V is an example).
'lead' says to put letters next to each other.
'lazily' becomes 'idly' (synonyms).
'a'+'v'+'idly'='AVIDLY'
'and' acts as a link.
(Other definitions for avidly that I've seen before include "with a lot?" , "Eagerly, enthusiastically" , "with enthusiasm" , "With keenness" , "Keenly, eagerly" .)