Definition of forage:
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,"
for animals, especially cattle and horses
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,"