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

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

The rough, untrimmed edge of paper left by a deckle. / A rough edge made to imitate this.

plural of deckle edge

A gambling technique by which a player determines whether a face-down playing card is likely to be low or high, by observing and exploiting subtle unintentional differences on the backs of some types of card, after arranging for the croupier to cooperate by unwittingly sorting the cards into low and high.

plural of bleed-edge

plural of bleed edge