bolthead

螺钉的头, 长颈烧瓶, （枪）机头

词形变化

boltheads 复数 boltheads

释义与例句

n.
  1. 1.

    A round-bottomed flask with a long neck (used especially for distillation)

    化学
  2. 2.

    The head of a bolt.

词源

From bolt + head.

来源：wiktionary