amorce

noun2

1. •
   A hint about the future; an instance of foreshadowing.

   • The word mourning is such an amorce, which prefigures the novel's denouement and also suggests that Jean's rejection of their daughter is tantamount to "killing" her. — 1994
2. •
   A percussion cap or detonator.

   • Cyrus Harding would certainly have been able to fabricate an amorce. In default of fulminate, he could easily obtain a substance similar to gun-cotton, since he had azotic acid at his disposal. — 1918