(lp) noun
1. A fold or doubling, as of a string or rope, so as to form an eye or a bend through which something may be passed; a noose; bight; hence, a curve or bend of any kind.
2. A stitch used in crocheting and knitting.
3. Electr. A complete magnetic or electrical circuit.
4. A curve in a railroad, carried completely around to reach a different level; also, a branch from the main line, returning to it after making a detour.
5. One of the basic patterns by which fingerprints are classified and identified, consisting of one or more ridges whose terminal points are on or toward the same side of the design.
6. Aeron. A complete, vertical, circular turn made by an airplane in flight.
7. Physics The part of a vibrating string, column of air, or standing wave system which is between two nodes; an antinode.
—to loop the loop To make a vertical, circular turn, as an airplane in flight.
—v.t.
1. To form a loop or loops in or of.
2. To fasten, connect, or encircle by means of a loop or loops.
3. Aeron. To fly (an aircraft) in a loop or loops.
—v.i.
4. To make a loop or loops.
5. To move by forming loops, as a measuring worm. [Cf. Irish lub loop]

(lp) noun
Iron of pasty consistency ready for rolling. [<F loupe]

(lp) noun
Any small window or aperture; a loophole. [Cf. MDu. lupen lie in wait, peer]