Definition of faunch:
(v) :
(US, equestrianism) To bite the bit, especially when restless; to champ.
(v) :
(US, chiefly Midland American English and Western American English) To worry; to be eager; to show impatience.
(v) :
(US, chiefly Midland American English and Western American English) To complain; to rant; to rave.
(n) :
(dated, fandom slang) A desire; a yearning.
(v) :
(dated, fandom slang) To desire; to yearn; to covet.