(transitive) To turn a switch to the "off" position in order to stop or disable a device. / (idiomatic) To lose interest, and start thinking about something else.

(military) In naval mine warfare, a switch in a mine operated by a projecting spike.

(baseball) A person who can bat either as a right-hander or a left-hander. / (cricket) A batsman who performs switch-hits.

(baseball, softball) To bat both left and right-handed. / (cricket) To face the bowler with a left or right-handed batting stance, and then switch to the opposite stance as the ball is bowled.

(cricket) An instance of switch-hitting.

Relating to use of bait and switch (offering one attractive exchange initially, but not honoring the offer) in business, politics, and elsewhere.

(idiomatic) Neglectful of an important task, responsibility, or opportunity.

(idiomatic) Alternative form of asleep at the switch

plural of dimmer switch

(telecommunications) A switch that can selectively change signals between optical fibers or integrated optical circuits.