a. Receiving the charge at the breech instead of at the muzzle. [ 1913 Webster ]
n.
a. Receiving its charge through the muzzle;
. (Aeronautics) The weight supported per square unit of surface; the quotient obtained by dividing the gross weight, in pounds, of a fully loaded flying machine, by the total area, in square feet, of its supporting surface. [ Webster 1913 Suppl. ]