TUNNEL n.
Metal.), the top of a smelting furnace where the materials are put in. -- Tunnel kiln, a limekiln in which coal is burned, as distinguished from a flame kiln, in which wood or peat is used. -- Tunnel net, a net with a wide mouth at one end and narrow at the other. -- Tunnel pit, Tunnel shaft, a pit or shaft sunk fro…
VISCERAL a.
Visceral cavity or tube (Anat.), the ventral cavity of a vertebrate, which contains the alimentary canal, as distinguished from the dorsal, or cerebro-spinal, canal. -- Visceral clefts (Anat.), transverse clefts on the sides just back of the mouth in the vertebrate embryo, which open into the pharyngeal portion of th…