Loop  —n. 1 a figure produced by a curve, or a doubled thread etc., that crosses itself. B thing, path, etc., forming this figure. 2 similarly shaped attachment used as a fastening. 3 ring etc. As a handle etc. 4 contraceptive coil. 5 (in full loop-line) railway or telegraph line that diverges from a main line and joins it again. 6 skating or aerobatic manoeuvre describing a loop. 7 complete circuit for an electric current. 8 endless band of tape or film allowing continuous repetition. 9 sequence of computer operations repeated until some condition is satisfied. —v. 1 form or bend into a loop. 2 fasten with a loop or loops. 3 form a loop. 4 (also loop the loop) fly in a circle vertically. [origin unknown]