Source : Webster's Revised Unabridged Dictionary (1913)

Palolo \Pa*lo"lo\, n., or Palolo worm \Palolo worm\ . [From
   native name.]
   A polystome worm ({Palolo viridis}) that burrows in the coral
   reefs of certain of the Pacific Islands. A little before the
   last quarter of the moon in October and November, they swarm
   in vast numbers at the surface of the sea for breeding, and
   are gathered and highly esteemed as food by the natives. An
   allied species inhabits the tropical Atlantic and swarms in
   June or July.