CRAB n.
alling crab. (Zoöl.) See Fiddler., n., 2. -- Crab apple, a small, sour apple, of several kinds; also, the tree which bears it; as, the European crab apple (Pyrus Malus var.sylvestris); the Siberian crab apple (Pyrus baccata); and the American (Pyrus coronaria). -- Crab grass. (Bot.) (a) A grass (Digitaria, or Panicum…
CRANK n.
ter. Burton. Crank axle (Mach.), a driving axle formed with a crank or cranks, as in some kinds of locomotives. -- Crank pin (Mach.), the cylindrical piece which forms the handle, or to which the connecting rod is attached, at the end of a crank, or between the arms of a double crank. -- Crank shaft, a shaft bent int…
CRETACEOUS a.
name for carbonic acid. -- Cretaceous formation (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period; -- called also the chalk formation. See the Diagram under Geology. -- Cretaceous period (Geol.), the time in the latter part of the Mesozoic age d…