Sentence:  But oh! ſhall I, Misfortune's bondman, ſpeak / Of pleaſures and delights, where ſorrows ſhriek! / Can plaintive nightingale, or turte-dove, / When vultures tear them, ſing or <WSD>coo</WSD> of love? 
Meaning of the word marked with <WSD> tags:  To make a soft murmuring sound, as a pigeon.