Last bit of tiring ramble in wood (5)
I believe the answer is:
grove
'wood' is the definition.
(grove is a kind of wood)
'last bit of tiring ramble' is the wordplay.
'last bit of' suggests the final letters.
'ramble' becomes 'rove' ('rove' can be a synonym of 'ramble').
The last letter of 'tiring' is 'g'.
'g'+'rove'='GROVE'
'in' is the link.
(Other definitions for grove that I've seen before include "Hurst" , "Writer on music" , "small plantation" , "Orchard" , "Small wooded area" .)