Bridge across part of a torrent, useful to Highlanders (7)
I believe the answer is:
sporran
'a torrent useful to highlanders' is the definition.
I can't judge whether this defines the answer.
'bridge across part' is the wordplay.
'bridge' becomes 'span' (synonyms).
'across' becomes 'orr' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'part' means one lot of letters goes inside another (one word creates a gap in ie parts another word).
'span' placed around 'orr' is 'SPORRAN'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for sporran that I've seen before include "Pouch accompanying kilt" , "Scots dress item" , "Purse worn with kilt" , "bag" , "Scotsman's pouch" .)