- a pendent, tapering mass of ice formed by the freezing of dripping water.
- a thin strip of paper, plastic, or foil, usually silvery, for hanging on a Christmas tree as decoration.
- a cold, unemotional person.
- a hanging spike of ice formed by the freezing of dripping water
early 14c., isykle, from is “ice” + ikel “icicle,” from Old English gicel “icicle, ice” (rel. to cylegicel “cold ice”), from Proto-Germanic *jekilaz (cf. Old Norse jaki “piece of ice,” diminutive jökull “icicle, ice, glacier;” Old High German ihilla “icicle”), from PIE *yeg- “ice.” Dialectal ickle “icicle” survived into 20c.