swell up
phrasal verbPart ofswell
swell up — phrasal verb
1. to become larger or rounder, especially suddenly, usually because of an injury,
1.phrasal verb
Definition
to become larger or rounder, especially suddenly, usually because of an injury, infection, or allergic reaction
Example
Indra's eyes swelled up after she touched the plant, and she needed medicine right away.
The little boy's knee swelled up where he had fallen on the concrete path.