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loop (n.)

late 14c., "a fold or doubling of cloth, rope, leather, cord, etc.," of uncertain origin. OED favors a Celtic origin (compare Gaelic lub "bend," Irish lubiam), which in English was perhaps influenced by or blended with Old Norse hlaup "a leap, run" (see leap (v.)). As a feature of a fingerprint, 1880. In reference to magnetic recording tape or film, first recorded 1931. Computer programming sense "sequence of instructions executed repeatedly" first attested 1947.

loop (v.)

c. 1400, loupen, "to draw (a leash through a ring)," from loop (n.). Sense of "form into a loop or loops" (transitive) is from 1832; transitive meaning "form (something) into loops" is from 1856. Related: Looped (1934 in the slang sense "drunk"); looping. Loop the loop (1900) originally was in reference to roller-coasters at amusement parks.

"Loop-the-Loop" is the name of a new entertainment which goes further in the way of tempting Providence than anything yet invented. The "Loop" is an immense circle of track in the air. A car on a mimic railway shoots down a very steep incline, and is impelled around the inner side of this loop. ... The authorities at Coney Island are said to have prohibited "looping-the-loop" because women break their corset strings in their efforts to catch their breath as they sweep down the incline, and moreover, a young man is reported to have ruptured a blood vessel in his liver. ["Philadelphia Medical Journal," Aug. 10, 1901]

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Definitions of loop
1
loop (n.)
fastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines;
Synonyms: cringle / eyelet / grommet / grummet
loop (n.)
anything with a round or oval shape (formed by a curve that is closed and does not intersect itself);
loop (n.)
(computer science) a single execution of a set of instructions that are to be repeated;
Synonyms: iteration
loop (n.)
an inner circle of advisors (especially under President Reagan);
he's no longer in the loop
loop (n.)
the basic pattern of the human fingerprint;
loop (n.)
a computer program that performs a series of instructions repeatedly until some specified condition is satisfied;
loop (n.)
the topology of a network whose components are serially connected in such a way that the last component is connected to the first component;
Synonyms: loop topology
loop (n.)
an intrauterine device in the shape of a loop;
loop (n.)
a complete electrical circuit around which current flows or a signal circulates;
Synonyms: closed circuit
loop (n.)
a flight maneuver; aircraft flies a complete circle in the vertical plane;
Synonyms: loop-the-loop
2
loop (v.)
move in loops;
The bicycle looped around the tree
loop (v.)
make a loop in;
loop a rope
Synonyms: intertwine
loop (v.)
fly loops, perform a loop;
the stunt pilot looped his plane
loop (v.)
wind around something in coils or loops;
Synonyms: coil / curl
loop (v.)
fasten or join with a loop;
He looped the watch through his belt
From wordnet.princeton.edu