present participle of back water

plural of back-butt

A South American hummingbird, Sephanoides sephaniodes.

(cricket) A shot played by the batsman with most of his weight on the back foot.

(informal) A beauty treatment for men in which hair is removed from the back, from between the buttocks ("crack") and from the scrotum ("sack").

(idiomatic) Located back at the start, as after a dead end or failure.

(idiomatic) Back to the start, as after a dead end or failure.

(idiomatic) To adopt a position of noninvolvement. / (idiomatic) To be second to someone or something; to be less important or have a lower priority.

A person sitting (typically) in the back seat of a car issuing (unsolicited and usually unwanted) instructions to the driver.

(idiomatic) Without somebody's knowledge; secretly.