gritstone

名词 n.
中文释义

英文释义

名词 n.
  1. A form of sedimentary rock, similar to sandstone but coarser. countable,uncountable
    — So Tom went to go down; and first he went down three hundred feet of steep heather, mixed up with loose brown grindstone, as rough as a file […]

词形变化

gritstones plural

词源

From grit + stone.
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