I. swol ‧ len 1 /ˈswəʊlən $ ˈswoʊ-/ BrE AmE
the past participle of ↑ swell 1
II. swollen 2 BrE AmE adjective
1 . a part of your body that is swollen is bigger than usual, especially because you are ill or injured:
swollen glands
a badly swollen ankle
His eyes were swollen from crying.
2 . a river that is swollen has more water in it than usual
3 . have a swollen head/be swollen-headed British English to be too proud and think you are very clever or important