jacklight noun 1verb 1forms 4 noun1 •(US, Canada) A spotlight or lamp mounted on a car, boat or pole, etc. to aid in hunting.It was a long, low roadster, with a jacklight. — 1931 verb1 •(US, Canada) To shine a jacklight or spotlight on an animal, usually a deer, to aid in hunting at night. formsjacklighted · jacklit · jacklighting · jacklights
