IPA: /ˈtoʊstˌmɪstrəs/
KK: /ˈtoʊstˌmɪstrəs/
A woman who leads the toasts and introduces speakers at a formal gathering or banquet.
The toastmistress welcomed everyone and introduced the first speaker of the evening.
Toastmistress → It is formed from "toast" (from Old French *toster*, meaning to toast or brown) and "mistress" (from Latin *magistra*, meaning a woman who is in charge or a female teacher). The word "toastmistress" refers to a woman who is in charge of making toasts at a gathering or event.
Think of a woman who is in charge ('mistress') of making things brown or warm ('toast') — that's what a toastmistress does.