goat's foot noun2 •Scutiger pes-caprae, a species of fungus in the order Russulales. •A particular type of mechanism for cocking a crossbow.A number of halberds, or battle-axes, also was carried. Other ordnance included two goat's feet (crossbow cocking mechanisms) and bombs, grenades, and combustible balls “for fireworks.” — 1978 formsgoat's feet