MARGIN n.
stocks, wheat, etc. N. Biddle. Margin draft (Masonry), a smooth cut margin on the face of hammer-dressed ashlar, adjacent to the joints. -- Margin of a course (Arch.), that part of a course, as of slates or shingles, which is not covered by the course immediately above it. See 2d Gauge.
MONKEY n.
The weight or hammer of a pile driver, that is, a very heavy mass of iron, which, being raised on high, falls on the head of the pile, and drives it into the earth; the falling weight of a drop hammer used in forging.
NOSE n.
similar to a gouge bit, but having a cutting edge on one side of its boring end. -- Nose hammer (Mach.), a frontal hammer. -- Nose hole (Glass Making), a small opening in a furnace, before which a globe of crown glass is held and kept soft at the beginning of the flattening process. -- Nose key (Carp.), a fox wedge.…
PIANO; PIANOFORTE n.
nd consisting of a sreies of wires of graduated length, thickness, and tension, struck by hammers moved by keys. Dumb piano. See Digitorium. -- Grand piano. See under Grand. -- Square piano, one with a horizontal frame and an oblong case. -- Upright piano, one with an upright frame and vertical wires.…