Collins COBUILD Advanced Learner's English Dictionary - lamp

(lamps) 1. A lamp is a light that works by using electricity or by burning oil or gas. She switched on the bedside lamp... In the evenings we eat by the light of an oil lamp. N-COUNT 2. A lamp is an electrical device which produces a special type of light or heat, used especially in medical or beauty treatment. ...a sun lamp. ...the use of infra-red lamps. N-COUNT: usu supp N