(idiomatic) Any strategy devised to reach a given objective.

An alternative approach adopted when one's original plan does not succeed.

(call center jargon) A plan that specifies actions to be taken when the telephone queue exceeds acceptable levels.

Birth control, especially when carried out by monogamous heterosexual couples.

An alternative plan to be put into operation if needed, especially in case of emergencies, or if a primary plan fails.

(architecture) Having large rooms with few dividing barriers such as partitions.

(architecture) A diagram, usually to scale, showing the layout of a building.

As intended, as planned, as expected; without the occurrence of any complications.

(education) A teacher's document used to plan a lesson.

(Britain, construction, law) Legal permission granted by a government authority to construct on one's land, or to change the use of the land.