Rind
Webster's Dictionary [1]
(1): ( v. i.) To become ground or pulverized by friction; as, this corn grinds well.
(2): ( v. i.) To perform hard aud distasteful service; to drudge; to study hard, as for an examination.
(3): ( v. i.) To become polished or sharpened by friction; as, glass grinds smooth; steel grinds to a sharp edge.
(4): ( v. t.) To study hard for examination.
(5): ( n.) A hard student; a dig.
(6): ( v. i.) To perform the operation of grinding something; to turn the millstones.
(7): ( n.) The act of reducing to powder, or of sharpening, by friction.
(8): ( n.) Any severe continuous work or occupation; esp., hard and uninteresting study.
(9): ( v. t.) To reduce to powder by friction, as in a mill, or with the teeth; to crush into small fragments; to produce as by the action of millstones.
(10): ( v. t.) To wear down, polish, or sharpen, by friction; to make smooth, sharp, or pointed; to whet, as a knife or drill; to rub against one another, as teeth, etc.
(11): ( v. t.) To oppress by severe exactions; to harass.
(12): ( v. i.) To move with much difficulty or friction; to grate.
Wilson's Dictionary of Bible Types [2]
Job 31:10 (b) This is a symbol of subserviency and recompense. Isaiah 3:15 (b) By this symbol is indicated the cruel hardships placed upon the poor by the powerful rich.
Matthew 21:44 (a) This figure indicates the power of God to punish His enemies and the power of Christ to punish those who reject and refuse Him. (See Luke 20:18).