Sentence:  The strain "h"("t") produced by a <WSD>smirch</WSD> in LISA is given by "h"("t") = &minus;-"A"("t")cos[("t") + φ("t")] 
Meaning of the word marked with <WSD> tags:  A chirp of radiation power from an astronomical body that has a smeared appearance on its plot in the time-frequency plane (usually associated with massive bodies orbiting supermassive black holes)