| 单词 | quarter-hollow |
| 释义 | > as lemmasquarter-hollow quarter-hollow n. a concave moulding (moulding n.1 2b) that has an arc which is (approximately) a quarter circle; (also) an engraving tool used to make convex or concave mouldings (more fully quarter-hollow tool). ΚΠ 1847 C. Holtzapffel Turning & Mech. Manip. II. xxiv. 519 Convex mouldings are frequently made by rectilinear tools..but the bead..the astragal..or the quarter hollows..facilitate the process..and enable it to be repeated any number of times with exact uniformity. 1875 E. H. Knight Amer. Mech. Dict. III. 1843/2 Quarter-hollow Tool,..a chisel (c, Fig. 4066) for making convex moldings. 1891 E. H. Knight Pract. Dict. Mech. (new ed.) at Quarter-hollow In arch., etc., a concave molding the arc of which is, or approaches, 90°, or a quadrant: the converse of a quarter-round. 1957 F. S. Meyer Handbk. Ornament 199 The last, as a quarter-hollow forms the transition between fillet and shaft. 1999 J. P. McAleer Rochester Cathedral iv. 65 The southeastern half-Romanesque/half-Gothic pier has a more elaborate base..consisting of two thin rolls above a narrow quarter-hollow. < as lemmas |
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