| 释义 |
ˈfloat-stone
[f. float v. + stone.]
1. A bricklayer's rubbing-stone for smoothing the surfaces of bricks used in curved work.
1703Moxon Mech. Exerc. 246 Some use a Float Stone, with which they rub the moulding of the Brick. 1812J. Smith Panorama Sc. & Art I. 196 The stone upon which bricks cut with curved surfaces are rubbed, is called a float-stone.
2. A stone so light as to float upon water, e.g. a spongy variety of opal.
1805R. Jameson Min. II. 552 Floatstone..is light yellowish grey. 1814tr. Klaproth's Trav. 57 A range of float-stone hills. 1859Page Handbk. Geol. Terms, Float-Stone, a variety of earthy silica..Being porous, it swims on water till saturated. |