Definition from Wiktionary, the free dictionary
- The appearance of rock after having been worn smooth by a passing glacier.
2001, Bill Guyton, Glaciers of California:
- Tenaya Lake was at one time under as much as 2,460 feet of glacial ice that produced a pressure of about 74 tons per square foot and extensive glacial polish (fig. 18).
- 2002, John Menzies, Modern and Past Glacial Environments: Revised Student Edition 
- Glacial polish on lee surfaces may reflect this sorting.
1953, Hans Cloos, Conversation with the Earth:
- However, in Canada and Northern Europe—where they are known collectively as "shields"—the basement formations stretch out in the lowlands, smoothed by glacial polish.