Sentence:  He had come with his own <WSD>blush</WSD> of boys. All afternoon they had shimmered upon the lawns. 
Meaning of the word marked with <WSD> tags:  (The collective noun for a group of boys).<ref>The 1986 "Oxford Reference Dictionary", Appendix, cites "(The Book of St Albans)," circa 1486, attributed to (Juliana Berners), in which “a Blusshe of boyes” appears in an extensive list of collective nouns.[http://name.umdl.umich.edu/A16392.0001.001]</ref>