nounWord forms:  plural -li (-ˌlaɪ)1.   another name for hummingbird
2. any of several Old World warblers, esp Phylloscopus trochilus (willow warbler)
   Word origin
C16: via Latin from Greek 
trokhilos name of a small Egyptian bird said by ancient writers to pick the teeth of crocodiles,from 
trekhein to run