GRINDSTONE n.
A flat, circular stone, revolving on an axle, for grinding or sharpening tools, or shaping or smoothing objects. To hold, pat, or bring one's nose to the grindstone, to oppress one; to keep one in a condition of servitude. They might be ashamed, for lack of courage, to suffer the Lacedæmonians to hold their noses to th…
GROUND n.
on (Zoöl.), one of numerous species of pigeons which live largely upon the ground, as the tooth-billed pigeon (Didunculus strigirostris), of the Samoan Islands, and the crowned pigeon, or goura. See Goura, and Ground dove (above). -- Ground pine. (Bot.) (a) A blue-flowered herb of the genus Ajuga (A. Chamæpitys), form…