Sentence:  <WSD>Poetry in motion</WSD>, walkin' by my side / Her lovely locomotion keeps my eyes open wide / <WSD>Poetry in motion</WSD>, see her gentle sway / A wave out on the ocean could never move that way 
Meaning of the word marked with <WSD> tags:  A person or thing that moves in a particularly fluid, graceful way. (from late 19th c.)