noun
plural loops
[count] 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
something that is shaped like a loop
a ring or curved piece used for holding something
[count] :an action in which an airplane flies in an upright circle perpendicular to the ground
[count] :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
[count] computers :a series of instructions that are repeated in a computer program until a specified condition is met
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
knock/throw (someone) for a loop
US informal :to cause (someone) to be very amazed, confused, or shocked
knock (something) for a loop
US informal :to damage or ruin (something)
verb
loops; looped; looping
to form or cause (something) to form a loop [no obj]
to move or cause (something) to move in a high curving path [no obj]
loop the loop
to perform a loop in an airplane