cook off verb 6cook-off noun 2forms 4 verb6 •To eliminate by cooking.You have to cook off the excess liquid. •To cause an accidental detonation of explosives due to excess heat. •To accidentally detonate as the result of excess heat. •(US) To pull the pin from a grenade and wait two or three seconds before throwing. •To heat alcohol in preparation for distilling liquor. •(US) As above, except to unintentionally wait so long that the grenade detonates. cook-off noun2 •(US) A cooking contest. •The accidental detonation of explosives as the result of excessive heat. formscooked off · cooking off · cooks off · cook-offs