Six clubs supported by one Peruvian wool supplier (6)
I believe the answer is:
vicuna
'wool supplier' is the definition.
(animal which produces wool)
'six clubs supported by one peruvian' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'clubs' becomes 'c' (abbreviation used in card games such as bridge).
'supported by' says to put letters next to each other (in a down clue, some letters hold up others).
'one peruvian' becomes 'una' ('one' in Spanish - eg in Peru).
'vi'+'c'+'una'='VICUNA'
(Other definitions for vicuna that I've seen before include "woollen fabric" , "fine wool cloth" , "Wild relative of llama" , "Small wildl cud-chewing Andean animal with soft wool" .)