SHOVEL n.
in front like a shovel, - - worn by some clergy of the English Church. [Colloq.] -- Shovelspur (Zoöl.), a flat, horny process on the tarsus of some toads, -- used in burrowing. -- Steam shovel, a machine with a scoop or scoops, operated by a steam engine, for excavating earth, as in making railway cuttings.…
SPIRAL a.
iral; like a spiral. Spiral gear, or Spiral wheel (Mach.), a gear resembling in general a spur gear, but having its teeth cut at an angle with its axis, or so that they form small portions of screws or spirals. -- Spiral gearing, a kind of gearing sometimes used in light machinery, in which spiral gears, instead of be…