(idiomatic) A person who is innocent, naive, inexperienced, or helpless, especially with respect to an unfamiliar situation or environment.

(idiomatic, Britain, euphemistic) Of an item of merchandise, to come into a person's possession without having been paid for; to have been acquired illegally.

Alternative spelling of backwater

(nautical) To reverse the action of the oars, paddles, or propeller, so as to force the boat or ship backward.

Alternative form of backbite

(Roman mythology) Dionysus, the Greek god of wine and vivid social gatherings.

A person born in the postwar years (generally considered in the United States and other Allied countries as between 1946 and the early 1960s), when there was a marked increase in birthrates throughout the Western world following the return of servicemen at the end of World War II.

(music) when bass strings are slapped rather plucked individually.

(aerial freestyle skiing) a faulty landing, whereby the skier rotates backwards around the knee-joint and hits the snow of the landing slope with their back and head, before rising off the snow back into position with their skis underneath them.

(transitive) To reverse (a vehicle) from a confined space. / (intransitive) To withdraw from something one has agreed to do. / (transitive) To dare (someone) to not withdraw from a challenge.