hair-trigger

n trigger that causes a gun to fire at the very slightest pressure （枪的）微力扳机.

hagridden, hail, hailstone, hailstorm, hair, hair shirt, hair-do, hair-drier (also hair-dryer), hair-dyeing, hair-grip (also grip), hair-line, hair-net, hair-oil, hair-piece, hair-raising, hair-restorer, hair-slide (also slide), hair-splitting, hair-style, hair-stylist, hairbrush, haircloth, haircut, hairdress, hairdresser, hairdressing, hairiness, hairless, hairpin, hairspring, hairy, hake, halal, halal (also hallal), halcyon, hale, half, half board, half cock, half holiday,