Jordan curve

In an airline seat, the hips and pelvis rotate forward and the S curve flattens.

He drew her back to him, and she yielded and settled closely in the curve of his arm, and he told her the story.

There is a sharp curve in the permanent way outside the station, so that a train is on you all of a sudden.

The tunnel itself includes a reverse curve, and, at the present time, railroad tracks and Stock Creek waters run through it.

He kept on grimly, however, never deviating from his perspective, which was the swampy ground on the outer curve of the bend.

The children watched him disappear around the curve and then turned to Jess expectantly.