Suit for digging (5)
I believe the answer is:
spade
This clue could be a double definition.
'suit' is the first definition.
(playing card suit)
'digging' is the second definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for spade that I've seen before
include
"Tool; playing card"
,
"Small shovel"
,
"Black leaf-shaped symbol on playing card"
,
"10