- Filled near or to capacity: a crowded bus.
- Filled with a crowd: a crowded plaza.
- Filled to such an extent as to be detrimental to the inhabitants: “By the mid-1800s children were being transported on 'orphan trains' from crowded eastern slums and institutions to the West” ( Mary-Lou Weisman )
(comparative more crowded, superlative most crowded)
- Containing too many of something; teeming.
- Simple past tense and past participle of crowd.