What numbers of wild beasts continue to do (7)
I believe the answer is:
dwindle
'do' is the definition.
Although both the answer and definition are verbs in their base form, I cannot understand how they can define each other.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for dwindle that I've seen before include "'Die down, grow less (7)'" , "Become gradually less or smaller" , "Grow less - waste away" , "Peter out" , "Grow less and fade away" .)