Definitions
1.nounThe state of sinking or bending; a droop.
2.nounThe difference in elevation of a wire, cable, chain or rope suspended between two consecutive points.
3.nounThe 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.
4.verbTo sink, in the middle, by its weight or under applied pressure, below a horizontal line or plane."A line or cable supported by its ends sags, even if it is tightly drawn."
5.verb(by extension) To lean, give way, or settle from a vertical position."A building may sag one way or another."
6.verbTo 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.
7.verbTo loiter in walking; to idle along; to drag or droop heavily.
8.verbTo cause to bend or give way; to load.
9.verbTo wear one's trousers so that their top is well below the waist.