A common of pannage Is the right of feeding swine on mast and acorns at certain seasons in a commonable wood or forest. Elton, Commons, 25; Williams, Common, 168. Pannagium est pastus porcorum, In nemoribus et in silvis, ut puta, de glan dibns, etc. 1 Bulst 7. A pannagium is a pasture of hogs, in woods and forests, upon acorns, and so forth.