An artificial obstruction, such as a dam, in a river designed to increase its depth or to divert its flow.

(transitive) To direct a barrage at.

(uncountable) Sonic barrier, the sudden increase in drag (resistance) and other effects experienced by moving objects when their speed approaches that of sound or becomes supersonic (which used to be considered a barrier to higher speeds).

(historical, military) A tethered balloon, attached to the ground with a metal cable, intended to deter low-flying enemy aircraft; used especially in World War II.

present participle of bar

(collective) Bars; an arrangement or pattern of stripes or bars. / The act of fitting or closing something with bars. / The exclusion of someone; blackballing.

Unless something happens; excepting; in the absence of.

(obsolete) present participle of barr

Alternative form of wheel-barrow man

(idiomatic) Something very funny or amusing.