Obs. [ad. L. triangulus, f. TRI- + angulus corner.] Having three angles; three-cornered, triangular. Also quasi-adv. In the form of a triangle, triangularly.
1474. Caxton, Chesse, 136. In one of the corners was made a tour treangle as a shelde.
1525. trans. Jerome of Brunswick’s Surg., B ij/1. The bony part [of the nose] hath .ij. tryangle bonis.
a. 1548. Hall, Chron., Edw. IV., 201 b. Three hilles, not in equal distaunce,… but liyng in maner although not fully triangle.
1660. Bloome, Archit., A j. Gutta, are drops sometime round, sometime in Triangle fashion.
1661. [see TRIANGLE sb. 2 i].
1803. Shaw, Gen. Zool., IV. II. 444. Triangle Sparus [a fish]. Mentioned by Cepede from Commerson: native of the Indian seas.
Comb. 1655. Marq. Worcester, Cent. Inv., § 69. A little triangle scrued Key. Ibid., § 71. A Key perfectly square,… no heavier then the triangle-scrued Key.
