Seracs

noun

1. Often sérac: a hard, cone-shaped, pale green, strongly flavoured cheese from Switzerland made from skimmed cowmilk and blue fenugreek (Trigonella caerulea); Schabziger, Sapsago. It is usually eaten grated, mixed with butter, or in a fondue.
2. (glaciology) A sharp tower of ice formed by intersecting crevasses of a glacier.