es·ker 
(ĕskər)
(ĕskər)n.
A long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice. Also called os3.
[Irish Gaelic eiscir, from Old Irish escir.]
| 单词 | esker |
| 释义 | es·ker (ĕskər)n. A long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice. Also called os3. [Irish Gaelic eiscir, from Old Irish escir.] |
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