intransitive verb
Definition: To produce bubbles or foam, often seen in liquids when they are agitated or heated.
Example: The soda began to froth as I poured it into the glass.
noun
Definition: A mass of small bubbles that forms on the surface of a liquid, often seen in drinks or when a liquid is agitated.
Example: The froth on the cappuccino made it look very inviting.
transitive verb
Definition: To make a liquid form bubbles or foam on the surface.
Example: She froth the milk to make a creamy cappuccino.