Sentence:  'Twas early June, the new grass was flourishing everywheres, the posies in the yard—peonies and such—in full bloom, the sun was shining, and the water of the <WSD>bay</WSD> was blue, with light green streaks where the shoal showed. 
Meaning of the word marked with <WSD> tags:  A body of water (especially the sea) more or less three-quarters surrounded by land.