primer2 /'praima(r); 'praimv/ n [C] 1 small quantity of explosive, contained in a cap or cylinder, for igniting the powder in a cartridge, bomb, etc. 底火; 火帽; 雷管; 起爆劑 (裝在帽形或棒形容器內(nèi)的少量炸藥，用以引發(fā)彈藥筒、炸彈等) 。點(diǎn) the illus at cartridge. 參看 cartridge 之插圖。 2 priming (of paint). (油漆的) 底涂; 底層漆。