单词 | red staff |
释义 | > as lemmasred staff red staff n. now historical and rare a wooden staff to which a red substance is applied, and which is passed over the surface of a mill stone to mark irregularities on the surface. ΚΠ 1860 Sci. Amer. 14 Apr. 243/2 We take the red staff with water paint on it, and run it over the face of the stone, which shows the high places. a1877 E. H. Knight Pract. Dict. Mech. II. 1808/1 The red-staff used by millers to detect irregularities in the face of a millstone. 1949 G. Woodbury John Goffe's Mill xviii. 172 I became so absorbed in the details of the job,..and testing every few minutes with the 'red staff', sort of straightedge ruler covered with red chalk, that I forgot about wearing gloves. < as lemmas |
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