a drum beneath a boiler, into which sediment and mud in the water can settle for removal.
Mud eel
a long, slender, aquatic amphibian (Siren lacertina), found in the Southern United States. It has persistent external gills and only the anterior pair of legs. See Siren.
Mud frog
a European frog (Pelobates fuscus).
Mud hen
The American coot (Fulica Americana)
Mud lark
a person who cleans sewers, or delves in mud.
Mud minnow
any small American fresh-water fish of the genus Umbra, as Umbra limi. The genus is allied to the pickerels.
Mud plug
a plug for stopping the mudhole of a boiler.
Mud puppy
the menobranchus.
Mud scow
a heavy scow, used in dredging; a mud boat.
Mud turtle
any one of numerous species of fresh-water tortoises of the United States.
Mud wasp
any one of numerous species of hymenopterous insects belonging to Pepaeus, and allied genera, which construct groups of mud cells, attached, side by side, to stones or to the woodwork of buildings, etc. The female places an egg in each cell, together with spiders or other insects, paralyzed by a sting, to serve as food for the larva. Called also mud dauber.