DCHP-1 Online
pingo -es or -s. [< Esk. pinguq] 
1 n. North a large mound of ice covered with soil forced up by the pressure of expanding ice in the subsoil.
- 1941 We . . . made an expedition to the "pingos" or "bingos," those strange mounds that are landmarks on the coast. . . .
- 1957 And what causes the "pingoes," strange mounds of pure clear ice fifty to a hundred and fifty feet high.
- 1966 Since then only a few pingos have risen above the even surface.
2 n. a curiously-shaped pillar of clay, or cemented gravel, or other material, caused by erosion. [See picture at demoiselle.]
See also: demoiselle
- 1958 Wind erosion has caused the hard sandstone cores of these pingos to be whittled away to fantastic shapes in the Red River Badlands of the Drumheller Canyon in Alberta.
- 1941 We . . . made an expedition to the "pingos" or "bingos," those strange mounds that are landmarks on the coast. . . .