It is usually widest between the hindmost spines of the forward rim; there may be up to 9 pairs of these spines, with a few smaller ones right above the head, but they are missing altogether in some species.

The forward rim of Enterprise's -primary hull was less than five kilometers behind Enekti's rear end, and Sulu held her there as if the two ships were connected by tractors.

The arrowhead that made up the front cone of John Glenn protected smaller vehicles clamped to the forward rim of the ISP.

Tuck the forward rim of the diaphragm up behind the bone that forms the front of the pelvis (pubic bone) and the back rim up behind the cervix.

Every so often, when the firing slackened, he'd stick his tommy gun up over the forward rim of the trench, squeeze off a short burst in the direction of the Lizards, and then yank it back down again.

The ram slammed into the underside of the saucer section, a third of the way in from the forward rim.

If the wheel is leaned away from the vertical so that the top of the wheel moves to the left, the forward rim of the wheel also turns to the left.

The ring-shaped flying city can be extended indefinitely from the forward rim.