In control of a vehicle; driving. / (idiomatic) In control of the situation; in charge.

(idiomatic, pharmacology, medicine) Of drugs, dispensed by a pharmacist without needing a doctor's prescription or other form of compliance.

(baseball, of a pitcher) Having fewer strikes than balls against a batter in an at-bat. / (baseball, of a batter) Having more strikes than balls against a pitcher in an at-bat.

(idiomatic, of a horse) Evading the bit.

Alternative spelling of behind the scenes

Used other than figuratively or idiomatically: see fall, behind. / (idiomatic, intransitive) To be late (for a regular event) / (intransitive) To be progressively below average in performance.

(transitive, idiomatic) To abandon. / (transitive, idiomatic) To forget about. / (transitive, idiomatic) To not live longer than; to be survived by.

(idiomatic) Out of date; old-fashioned; obsolete; outmoded; outdated.

(computing, programming) A technique in object-oriented programming in which the visual and back-end source code are stored in separate files, allowing designers and programmers to work independently. Code-behind is a technique used in Microsoft programming platforms, including ASP.NET and XAML, where the practice is facilitated by separating the visual and code aspects through the use of partial classes.

Alternative spelling of behind the eight-ball