a rock sitting on a pillar of ice on top of a glacier, as a result of the ice immediately beneath the rock being protected from the heat of the sun and not melting
glacier table in American English
noun
a stone slab supported over the surface of a mountain glacier by a column or columns of ice
Word origin
[1855–60]This word is first recorded in the period 1855–60. Other words that entered Englishat around the same time include: barrage, boilerplate, kickoff, lavabo, superheat