bunched up; crowded together; clumped
Describes people or things packed tightly together like dumplings on a skewer. Often used for crowded trains, clumped objects, or tangled hair.
The morning train is always packed like sardines.
My hair is all tangled up and the brush won't go through.
Compound of 団子 (dango, 'dumpling') + 状態 (jōtai, 'state'), from the image of dumplings stuck together on a skewer.