Left donkey with ring and rope (5)
I believe the answer is:
lasso
'rope' is the definition.
(lassoing is a kind of roping)
'left donkey with ring' is the wordplay.
'left' becomes 'l' (common abbreviation).
'donkey' becomes 'ass' (I've seen this before).
'with' says to put letters next to each other.
'ring' becomes 'o'.
'l'+'ass'+'o'='LASSO'
'and' is the link.
(Other definitions for lasso that I've seen before include "Rope for a cowboy" , "Nosed rope" , "Cow catcher" , "Long-noosed rope" , "Cowboy's rope with sliding noose" .)