The Collaborative International Dictionary
Galley-worm
Galley-worm \Gal"ley-worm`\, n. [Prob. so called because the numerous legs along the sides move rhythmically like the oars of a galley.] (Zo["o]l.) A chilognath myriapod of the genus Iulus, and allied genera, having numerous short legs along the sides; a milliped or ``thousand legs.'' See Chilognatha.
Wiktionary
galley-worm
n. A chilognath myriapod of the genus (taxlink Iulus genus) and allied genera, having numerous short legs along the sides; a millipede.