Know it takes time to get through to a young thing (6)
I believe the answer is:
kitten
'know' is the definition.
Although both the answer and definition are verbs in their base form, I can't understand how they can define each other.
'time to get through to a young thing' is the wordplay.
I cannot quite see how this works, but
'time' could be 'ten' (I've seen this before) and 'ten' is present in the answer.
'young' could be 'kit' (kit is a kind of young) and 'kit' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'it takes' is the link.
Can you help me to learn more?
(Other definitions for kitten that I've seen before include "Young Tom perhaps" , "Little Tom, perhaps" , "Young rabbit" , "Young feline animal" , "Fluffy little animal" .)