IPA: /ˈvɪk.tʃu.lər/
KK: /ˈvɪk.tʃu.ə.lər/
A person or business that provides food and supplies, especially to an army, navy, or ship.
The victualler ensured that the soldiers had enough food for their journey.
Victualler → It is formed from "victus" (meaning food or sustenance) and "-er" (meaning a person who). A victualler is a person who provides food or provisions.
Think of someone who provides 'food' ('victus') — that's what a victualler does.