a class of marine annelid worms which comprises the bristle worms
a marine annelid worm which has a segmented body with numerous bristles on the fleshy lobes of each segment
a tube-dwelling marine bristle worm which bears a fan-like crown of filaments that are typically brightly coloured and project from the top of the tube, filtering the water for food particles
a bristle worm that lives in muddy sand, leaving characteristic worm casts on lower shores. It is widely used as bait by fishermen
a marine annelid worm of the class Polychaeta; a bristle worm
a large marine bristle worm with a stout oval body which bears matted fur-like iridescent chaetae
a small marine fan worm which lives in a twisted shell-like tube, typically in colonies, with retractable tentacles for filter-feeding
a marine bristle worm, especially a fan worm, which lives in a tube made from sand particles or in a calcareous tube that it secretes
the twisted calcareous tube of a sedentary marine bristle worm, typically attached to a stone or mollusc shell