[See FLANCH v.; in senses 2 and 3 f. prec. sb.]
1. intr. To widen out. Also, with out.
1820. R. Wilbraham, Chesh. Gloss., Flange, or Flange out, to spread, diverge, to increase in width or breadth, like the mouth of a trumpet or a French horn.
1878. Stevenson, Inland Voy., 167. I have seldom looked on the east-end of a church with more complete sympathy. As it flanges out in three wide terraces and settles down broadly on the earth, it looks like the poop of some great old battle-ship.
2. To take the form of a flange. (In recent Dicts.).
3. trans. To supply with a flange, attach a flange to, form a flange upon.
1873. R. Wilson, Steam Boilers, 92. The mode in which a flat, dished or cambered end plate is secured to the barrel materially affects its capability of resisting the effect of the internal stress upon it. The modes adopted are by angle iron, either internal or external, or by flanging either the barrel or end plate.