IPA: /ˈmʌd.lər/
KK: /ˈmʌd.lɚ/
A tool or person that mixes or mashes ingredients together, often used in making drinks or food.
The bartender used a muddler to crush the mint leaves for the cocktail.
Muddler → The word 'muddler' is derived from 'muddle' (from Middle English 'moddlen', meaning to mix or stir) and the suffix '-er' (meaning a person who). A muddler is a person who mixes or stirs ingredients, often in the context of cocktails.
Think of someone who 'mixes' ('muddle') things together — that's what a muddler does.