IPA: /ˈfoʊmər/
KK: /ˈfoʊmɚ/
A device that creates foam or froth from a liquid, often used in cleaning or food preparation, or a person who is very enthusiastic about trains and railways.
The foamer used in the kitchen helped to create a light and airy texture for the whipped cream.
Foamer → The word is formed from "foam" (from Old English *fām*, meaning a frothy substance) and "-er" (meaning a person who). A foamer is a person who creates or is associated with foam.
Think of someone who creates or is associated with a frothy substance — that's what a foamer means.