loop

noun

• 1a shape produced by a curve that bends around and crosses itself.
• a length of thread, rope, or similar material, doubled or crossing itself, typically used as a fastening or handle.
• a curved stroke forming part of a letter (e.g., b, p).
• (also loop-the-loop) a maneuver in which an aircraft describes a vertical circle in the air.
• Skating a maneuver describing a curve that crosses itself, made on a single edge.
• (the Loop) informal name for the commercial district in downtown Chicago.

• 2a structure, series, or process the end of which is connected to the beginning.
• an endless strip of tape or film allowing continuous repetition.
• a complete circuit for an electric current.
• Computing a programmed sequence of instructions that is repeated until or while a particular condition is satisfied.

verb

• form (something) into a loop or loops; encircle:she looped her arms around his neck
• follow a course that forms a loop or loops:the canal loops for two miles through the city
• put into or execute a loop of tape, film, or computing instructions:the program loops back on reaching a RETURN statement
• (also loop the loop) circle an aircraft vertically in the air.