Crowded together; thronged or filled with a pressed multitude.
From a- (prefix meaning 'in' or 'on') plus throng. This archaic form emphasizes the state of being densely packed with people.
Athrong is another victim of the fading 'a-' prefix tradition—Shakespeare might have written of streets athrong with people, but we now just say 'thronged,' losing the prefix that once made verbs feel more immediate and present.
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