corrugator
(ˈkɒr(j)uːgeɪtə(r))
[a. mod.L. corrūgātor, agent-n. f. corrūgāre to corrugate.]
1. Anything which corrugates or causes corrugation. rare.
| 1782 A. Monro Anat. 215 Styptics, and other like corrugators, are vainly applied. |
2. Anat. Each of the two small muscles which contract the brows in the action of frowning.
| [1706 Phillips, Corrugator Supercilii.] 1839 Todd Cycl. Anat. II. 280/2 The corrugator and frontalis muscles. 1872 Darwin Emotions ix. 222 The corrugators, by their contraction, lower the eyebrows and bring them together, producing vertical furrows on the forehead, that is, a frown. |
3. One who superintends a corrugating machine.
| 1881 Instr. Census Clerks (1885) 91. 1921 Dict. Occup. Terms (1927) §278 Zinc corrugator (galvanised sheet). Ibid. §559 Corrugator, corrugated packing maker. |