A bachelor's degree. / A high school completion exam and qualification awarded in many countries (e.g. Finland, France, Moldova, Romania), designed to enable students to go on to higher education.

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

(cricket) The batsman's foot closest to the wicket

(idiomatic, intransitive) To move backwards, especially for a vehicle to do so. / (idiomatic, transitive) To move a vehicle backwards. / (idiomatic, intransitive) To undo one's actions.

An order that cannot be currently filled or shipped, but is requested nonetheless for when the item becomes available again.

To place such an order

A knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking, or on a student's back when carrying books.

(intransitive) To hike and camp overnight in backcountry with one's gear carried in a backpack.

relaxed and easy-going; an absence of stress or worry

A board game for two players in which each has 15 stones which move between 24 triangular points according to the roll of a pair of dice; the object is to move all of one's pieces around, and bear them off the board.