icicle (n.) Look up icicle at Dictionary.com
early 14c., isykle, from is "ice" (see ice (n.)) + Middle English ikel, a word that by itself meant "icicle," from Old English gicel "icicle, ice" (found in compounds, such as cylegicel "chill ice"), from Proto-Germanic *jekilaz (cognates: Old Norse jaki "piece of ice," diminutive jökull "icicle, ice; glacier;" Old High German ihilla "icicle"), from PIE *yeg- "ice" (cognates: Middle Irish aig "ice," Welsh ia). Dialectal ickle "icicle" survived into 20c.