forearm /ˈfɔːˌɹɑːm/noun 2/ˌfɔːˈɹɑːm/ verb 1forms 3 noun2 •The part of the arm between the wrist and the elbow. •A section of the weapon between the receiver and the muzzle, used to hold the firearm steady. forearm /ˌfɔːˈɹɑːm/ verb1 •(figurative) To arm in preparation.But in so far as they were able to forearm themselves against the anxieties of bereavement, the loss may have been that much easier to face. — 2013 formsforearmed · forearming · forearms