A weapon consisting of a bomb placed at the end of a long spar and attached to a boat.


Related Terms

PORCUPINE BOILER

A boiler having dead end tubes projecting from a vertical shell.

PIKE POLE

1. A pole with a sharp metal point in one end that is used to hold utility poles upright while they are being installed. 2. See fire hook.

PICKHAMMER

[DESENG] Ahammerwithapoint at one end of the head and a blunt surface at the other end.

NICHOLSON'S HYDROMETER

A modification of Fahrenheit's hydrometer in which the lower end of the instrument carries a scale pan to permit the determination of the relative density of a solid.

NAILHEAD

Flat protuberance at the end of a nail opposite the point.

MULTIPLE CARTRIDGES

Filter medium made up of two or more filter cartridges, either fastened end to end or arranged side by side (in series or parallel flow respectively).

MOUTH

[ENG ACOUS] The end of a horn that has the larger cross-sectional area.

MOUSETRAP

A cylindrical fishing tool having the open bottom end fitted with an inward opening valve.

MERCURY BAROMETER

An instrument which determines atmospheric pressure by measuring the height of a column of mercury which the atmosphere will support; the mercury is in a glass tube closed at one end and placed, open end down, in a well of mercury. Also known as Torricellian barometer.

M-DESIGN CORE BARREL

A double-tube core barrel in which a 21/2 -taper core lifter is carried inside a short tubular sleeve coupled to the bottom end of the inner tube, and the sleeve extends downward inside the bit shank to within a very short distance behind the face of the core bit.

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