To turn or fold inwardly.
To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula.
To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.
Having one portion of a hollow organ drawn back within another portion.
sheathed
To lean, give way, or settle from a vertical position.
To cause to bend or give way; to load.
To wear one's trousers so that their top is well below the waist.
To pull down someone else's pants.
To loiter in walking; to idle along; to drag or droop heavily.
To sink, in the middle, by its weight or under applied pressure, below a horizontal line or plane.
To lose firmness, elasticity, vigor, or a thriving state; to sink; to droop; to flag; to bend; to yield, as the mind or spirits, under the pressure of care, trouble, doubt, or the like; to be unsettled or unbalanced.
The state of sinking or bending; a droop.
The difference in height or depth between the vertex and the rim of a curved surface, specifically used for optical elements such as a mirror or lens.
The difference in elevation of a wire, cable, chain or rope suspended between two consecutive points.