(idiomatic) To have an adventurous or perilous lifestyle; to behave in a manner which creates risks for oneself.

A piece of steel sharpened to an acute edge or angle, and resting on a smooth surface, serving as the axis of motion of a pendulum, scale beam, or other piece required to oscillate with the least possible friction.

plural of absorption edge

(physics) The boundary of a dark band in an x-ray spectrum.

A problem or situation that occurs only at an extreme (maximum or minimum) operating parameter or under other unusual operating conditions. / (loosely) Any unexpected input or user behaviour.

plural of edge case

A kind of embroidered work done by machinery on cambric or muslin, and used for trimming.

The thin, wire-like thread of metal sometimes formed on the edge of a tool by the stone in sharpening it.

An edge of small loops on the side of some kinds of ribbon. / A narrow kind of thread edging to be sewed on lace.

plural of knife-edge