D defs.my
Entry 2 senses Webster, 1913

Penstock

· Pen·stock · IPA
01 n. A close conduit or pipe for conducting water, as, to a water wheel, or for emptying a pond, or for domestic uses.
  1. 1.
    A close conduit or pipe for conducting water, as, to a water wheel, or for emptying a pond, or for domestic uses.
  2. 2.
    The barrel of a wooden pump.