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1 a . a curved part or shape made when something long and thin (such as a rope or thread) bends so that it touches or crosses over itself

• a closed loop of rope
• a wire with a loop at the end
• a loop of string/thread

1 b . something that is shaped like a loop

• They rowed along a loop in the river.
• The road formed a loop around the pond.
• letters formed with lots of loops

1 c . a ring or curved piece used for holding something

• a belt loop

2 . an action in which an airplane flies in an upright circle perpendicular to the ground

• The pilot did/performed a loop.

3 . a piece of film or tape with the ends joined together so that the same pictures or sounds are repeated continuously; also : a recording that is repeated continuously

• The computer-generated images are shown on a continuous loop.

4. computers : a series of instructions that are repeated in a computer program until a specified condition is met

5 .the loop : a group of people who know about or have influence or control over something — usually used in the phrases in the loop and out of the loop

• She wants to stay in the loop as these changes are being considered.
• He claims that he was kept out of the loop when the decision to sell the company was being made.