la espoleta - fuse (of a rocket or bomb), wishbone of a birdSpanish example: Estos eran proyectiles perforantes con espoleta en la base.
English example: These were puncturing projectiles with fuses in the base.
Source: la espoleta - fuse (of a rocket or bomb), wishbone of a bird (https://www.123teachme.com/spanish_feeds/word_of_the_day/2022/12/5)