PITCH n.
ith the span form an equilateral triangle. -- Pitch of a plane (Carp.), the slant of the cutting iron. -- Pitch pipe, a wind instrument used by choristers in regulating the pitch of a tune. -- Pitch point (Gearing), the point of contact of the pitch lines of two gears, or of a rack and pinion, which work together.…
PLANE n.
stock, usually of wood, from the under side or face of which projects slightly the steel cutting edge of a chisel, called the iron, which inclines backward, with an apperture in front for the escape of shavings; as, the jack plane; the smoothing plane; the molding plane, etc. Objective plane (Surv.), the horizontal pl…
PLOW; PLOUGH n.
Same as Charles's Wain. Ice plow, a plow used for cutting ice on rivers, ponds, etc., into cakes suitable for storing. [U. S.] -- Mackerel plow. See under Mackerel. -- Plow alms, a penny formerly paid by every plowland to the church. Cowell. -- Plow beam, that part of the frame of a plow to which the draught is appli…
POPPY n.
See under Corn. -- Horn, or Horned, poppy. See under Horn. -- Poppy bee (Zoöl.), a leaf-cutting bee (Anthocopa papaveris) which uses pieces cut from poppy petals for the lining of its cells; -- called also upholsterer bee. -- Prickly poppy (Bot.), Argemone Mexicana, a yellow-flowered plant of the Poppy family, but a…