Sentence:  If we manage to keep track of a Bombus <WSD>queen</WSD> after she has left her feeding place , we may discover the snug little hideout which she has fixed up for herself when she woke up from her winter sleep . 
Meaning of the word marked with <WSD> tags:  the only fertile female in a colony of social insects such as bees and ants and termites; its function is to lay eggs