loop¹ /loop/

1. The oval-shaped coil made in a piece of string, chain, etc as it crosses back over itself
2. Any similar doubling in the shape or structure of anything
3. Anything of similar form, eg an element in fingerprints
4. A branch of anything that returns to the main part
5. A series of instructions within a computer program which is performed repeatedly until a predetermined condition is met, when the computer will exit from the loop and carry on with the next instruction in the main program (computing)
6. A closed-circuit sound which a signal can pass (electronics)
7. An aerobatic manoeuvre in which an aircraft climbs, from level flight, to describe a circle in the sky
8. Any loop-shaped movement or manoeuvre
9. An intra-uterine contraceptive device shaped like a loop (also called Lippes loop)

1. To fasten in or with a loop
2. To ornament with loops
3. To make a loop of

To travel in loops

looped adjective

loopˈer noun

1. A caterpillar of the Geometridae, so-called from its mode of walking by forming the body into a loop and planting its hinder legs close behind the six ‘true’ legs
2. Someone or something that makes loops
3. Someone who loops the loop in an aeroplane

loopˈiness noun

The state or quality of being loopy

loopˈing noun and adjective

loopˈy adjective

1. Having loops
2. Crafty (Scot)
3. Slightly crazy (informal)

loop diuretic noun

A drug which inhibits resorption from the loop of Henle

loopˈ-line noun

A branch railway that returns to the main line

loop of Henle /henˈli/ noun

A loop formed by a tubule in the kidney, identified by Friedrich Henle (1809–85), German anatomist

in (or out of) the loop (informal)

Included (or not included) in a group to whom information is made available

loop the loop

To move in a complete vertical loop or circle, head downwards at the top of the curve

loop² /loop/ or loophole /loopˈhōl/

1. A vertical slit in a wall eg of a castle, for looking through, firing through or receiving light and air
2. A means of escape
3. A means of evasion, eg an ambiguity in a contract, etc

looped adjective (Shakespeare)

Full of small openings

loopˈhole transitive verb

To make loopholes in

loopˈ-light noun

A small narrow window

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