\Sand"worm`\, n. (Zo["o]l.)
(a) Any one of numerous species of annelids which burrow in
    the sand of the seashore.
(b) Any species of annelids of the genus {Sabellaria}. They
    construct firm tubes of agglutinated sand on rocks and
    shells, and are sometimes destructive to oysters.
(c) The chigoe, a species of flea.