—n.
1 a crowd of people.
2 (often foll. by of) a multitude, esp. in a small space.
—v.
1 intr. come in great numbers (crowds thronged to the stadium).
2 tr. flock into or crowd round; fill with or as with a crowd (crowds thronged the streets).
Etymology: ME thrang, throng, OE gethrang, f. verbal stem thring- thrang-
Useful english dictionary. 2012.