Unflanged

noun
1.
a projecting rim, collar, or ring on a shaft, pipe, machine housing, etc., cast or formed to give additional strength, stiffness, or supporting area, or to provide a place for the attachment of other objects.
2.
a broad ridge or pair of ridges projecting from the edge of a rolled metal shape generally at right angles, in order to strengthen or stiffen it.
3.
a ring or collar, usually provided with holes for bolts, and screwed or welded over the end of a tube or pipe to permit other objects to be attached to it.
4.
(in plumbing) a plate or flat ring bolted to the flange at the end of a length of pipe to close the end or to connect it with the flange of another such length:
blind flange; spectacle flange.
verb (used without object), flanged, flanging.
5.
to project like, or take the form of, a flange.
noun
1.
a projecting disc-shaped collar or rim on an object for locating or strengthening it or for attaching it to another object
2.
a flat outer face of a rolled-steel joist, esp of an I- or H-beam
3.
a tool for forming a flange
verb
4.
(transitive) to attach or provide (a component) with a flange
5.
(intransitive) to take the form of a flange

flange (flānj)
n.

A projecting rim or edge.

The part of the denture base that extends from the cervical ends of the teeth to the border of the denture.