Pronunciation: (si-rak'; Fr. sā-rak'), [key]
—pl. -racsPronunciation: (-raks'; Fr. -rak'). [key]
a large irregularity of glacial ice, as a pinnacle found in glacial crevasses and formed by melting or movement of the ice. Also,se•rac'.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.