[f. JET v.2 + -ING1.]
† 1. Projection or jutting out; a projection. Obs.
1669. Worlidge, Syst. Agric. (1681), 237. If it be a Wall for Fruit-trees, those Nooks or Corners in the Jettings out … are secure places for the more tender Trees.
1754–64. Smellie, Midwif., II. 7. The protrusion or jetting forwards of the last Vertebra of the loins.
1760. Wesley, Wks. (1872), III. 16. A jetting out of the rock … gave me a very convenient pulpit.
2. A spouting or spurting forth; a jet.
1702. W. J., trans. Bruyn’s Voy. Levant, xxxvi. 144. The Pipes and Cocks, and Generally all that is useful to the Jettings of Water.
1849. Dana, Geol., iii. (1850), 243. A jetting of scoria, which has formed a pseudo-conglomerate.
3. A jerky moving up and down. (Cf. JET v.2 6.)
1874. E. Coues, Birds N. W., 68. Its habits are somewhat peculiar … such as the continual jetting of the tail.
