[f. ARCH v. + -ING2.] Forming an arch, having a convex curve.
1677. Moxon, Mech. Exerc. (1703), 66. Ground more or less Arching.
1810. Scott, Lady of L., V. xviii. The steed obeyed, With arching neck.
1842. Tennyson, Margaret, v. The arching limes are tall.
