(of a space) full of people, leaving little or no room for movement; packed

a very crowded room

the crowded streets of Southwark

(of a number of people) fill (a space) almost completely, leaving little or no room for movement

the dance floor was crowded with revellers

move too close to (someone)

don't crowd her, she needs air

exclude someone or something by taking their place

rampant plants will crowd out the less vigorous