IPA: /ˈɡreɪpʃɒt/
KK: /ˈgreɪpʃɑt/
A type of ammunition made up of many small metal balls that are fired from a cannon to hit multiple targets at once.
The soldiers loaded the cannon with grapeshot to maximize the damage against the advancing enemy.
Grapeshot is formed from "grape" (from Old French *grape*, meaning a cluster of grapes) and "shot" (from Old English *sceotan*, meaning to throw or cast). The term originally referred to a type of ammunition that consisted of small iron balls, resembling a cluster of grapes, which were shot from cannons.
Think of a 'cluster of grapes' ('grape') being 'thrown' ('shot') — that's why grapeshot refers to ammunition that spreads out like a bunch of grapes.
No commonly confused words.