...so here's a cane to beat it with! (6)
I believe the answer is:
rattan
'so' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'a cane to beat it with' is the wordplay.
I cannot really understand how this works, but
'a' could be 'an' and 'an' is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
The remaining letters 'rat' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'here's' acts as a link.
Can you help me to learn more?
(Other definitions for rattan that I've seen before include "Stems of palms used for furniture" , "Wickerwork material" , "A form of cane" , "Palm stems used to make furniture" , "Type of cane for chairs" .)