vlo f, m (plural vlooien, diminutive vlooitje n)
From Old Dutch *flōh, *flō, from Proto-Germanic *flauhaz, from Proto-Indo-European *plówkos, a variant of *plúsis (“flea”). Compare Low German Flo, Flö, German Floh, West Frisian flie, English flea, Icelandic fló.