Aplenty, popular digging tools (2,6)
I believe the answer is:
in spades
'aplenty' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'popular digging tools' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'digging tools' becomes 'spades' (I've seen this in another clue).
'in'+'spades'='IN SPADES'
Can you help me to learn more?
(Other definitions for in spades that I've seen before include "to a great extent" , "Where a contract may be made" , "to a high degree" , "Without restraint" , "Unquestionably - how a bridge hand might be played?" .)