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Lap sb.4. World English Historical Dictionary

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Lap sb.4. World English Historical Dictionary Dictionary Biographies Literary Criticism Welcome Terms of Service ⧏ Previous Next ⧐ Contents Slice Contents Key Bibliographic Record Murray’s New English Dictionary. 1903, rev. 2024. Lap sb.4 [Of obscure etymology; perh. a use of prec., as the original tool may have been a ‘lap’ or wrapping of cloth or leather.] A rotating disk of soft metal or wood, used to hold polishing powder in cutting or polishing gems or metal.

1 1812–6.  J. Smith, Panorama Sci. & Art, I. 35. In the manufacture of cutlery, the use of the stone is followed by that of the lap or glazor.

2 1833.  J. Holland, Manuf. Metal, II. 29. The blade being properly ground, is then glazed … by applying it to the lap.

3 1884.  F. J. Britten, Watch & Clockm., 212. A soft steel lap at first and afterwards a zinc one are generally used.

4 1888.  Sheffield Gloss., Lap, a wooden wheel with a leaden surface used to glaze razors.

5   b.  Gun-making. (See quots.)

6 1881.  Greener, Gun, 238. The lap is fixed into a head revolving 650 times a minute. The barrel is moved backwards and forwards upon the lap.

7 1886.  Walsingham & Payne-Gallwey, Shooting, I. 71. The polisher, or ‘lap,’ as it is called, consists of an iron rod round which is secured a leaden plug the exact size of the tube.

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