<span>of water or air) cease to flow or move; become stagnant.
Hope this helps.
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In the first stanza the speaker stands before an old Grecian urn and speaks to it. He is concerned with the picture frozen in time. It is the "still unravishe'd bride of quietness" the "foster child of silence and slow time". He also describes the urn as a historian that can tell a story. He wants to know about the pictures on the side of the urn and ask what legend it can tell and from where they come. He saw a picture of a group of men chasing a group of women and wonders what a mad pursuit? What struggle to run away?
The verb must agree with the subject in number. ... When you have a singular and plural subject joined by or or nor, the verb will agree with the closest subject. Collective Noun Rule. A collective noun represents a group of things that can be expressed as a singular or plural concept, depending on how the word is used.
Mainly the first and last paragraphs of the passage.