Answer:

seracs

Answer	Crossword Clue
SERACS	Pinnacles of ice.
SERACS	Glacial forms.
SERACS	Pinnacles of ice on a glacier.

SERACS	Glacial phenomena.
SERACS	Glacial ice.
SERACS	Ice formations.
SERACS	Ice pinnacles.
SERACS	Ice pinnacles
SERACS	Sharp ridges
SERACS	Glacial blocks
SERACS	Masses of ice

SERACS	Glacial phenomena
SERACS	Glacial ridges
SERACS	Blocks of glacial ice
SERACS	Glacial masses
SERACS	Glacial pinnacles
SERACS	Glacial formations

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.