Definition of forage:
(v) :
to search for and gather
food for animals, particularly cattle and horses; to
rampage through, gathering and destroying as one goes
"1841 The message said that the party intended to hunt and forage through this region, for a month or two, afore it went back into the Canadas -- James Fenimore Cooper, The Deerslayer,"
(n) :
Fodder for animals, especially cattle and horses
(adj) :
of or pertaining to forage or foraging
"1903 As to my dress, I covered my Hussar uniform with a long cloak, and I put a grey forage cap upon my head. -- Arthur Conan Doyle, The Adventures of Gerard,"