Enjoy wagging tail using fingers (7)
I believe the answer is:
digital
'using fingers' is the definition.
(I've seen this before)
'enjoy wagging tail' is the wordplay.
'enjoy' becomes 'dig' (to dig can mean to appreciate or 'get').
'wagging' indicates anagramming the letters (letters swing or wag around).
'tail' anagrammed gives 'ital'.
'dig'+'ital'='DIGITAL'
(Other definitions for digital that I've seen before include "Key" , "Relating to fingers" , "As opposed to analogue?" , "Of watch, showing time in numbers" , "Opposite of analogue" .)