Definition of "crowded"

The train is usually crowded and half the township of Forres seems to turn out to watch it go off.

1944 January and February, W. McGowan Gradon, “Forres as a Railway Centre”, in Railway Magazine, page 23

Although it's always crowdedYou still can find some roomFor broken-hearted loversTo cry there in their gloom.

1956, “Heartbreak Hotel”, Mae Boren Axton, Tommy Durden, Elvis Presley (lyrics), performed by Elvis Presley