plan / plan/ • n. 1. a detailed proposal for doing or achieving something: the UN peace plan. ∎  a scheme for the regular payment of contributions toward a pension, savings account, or insurance policy: a personal pension plan.2. (usu. plans) an intention or decision about what one is going to do: I have no plans to retire.3. a detailed diagram, drawing, or program, in particular: ∎  a fairly large-scale map of a town or district: a street plan. ∎  a drawing or diagram made by projection on a horizontal plane, esp. one showing the layout of a building or one floor of a building. Compare with elevation (sense 3). ∎  a diagram showing how something will be arranged: look at the seating plan.• v. (planned, pla·nning) [tr.] 1. decide on and arrange in advance: they were planning a trip to Egypt| he plans to fly on Wednesday | [intr.] we plan on getting married in the near future. ∎  [intr.] make preparations for an anticipated event or time: we have to plan for the future.2. design or make a plan of (something to be made or built): they were planning a garden.PHRASES: someone's (or the) best plan a person's (or the) most sensible course of action.go according to plan happen as one arranged or intended.plan of action (or attack) an organized program of measures to be taken in order to achieve a goal.

plan. Horizontal section through a building showing the arrangement of rooms, etc. It is a drawing that represents an object in horizontal projection, to scale, as distinct from those representing vertical sections or elevations, and might show an exterior of an object as seen from above, as in a roof-plan. See also axial; bay; cell; centre; double pile; end; entry; E-plan; H-plan; hall; longhouse; open-hall; solar; wealden.

Bibliography

Fraser Reekie (1946)

plan XVIII (earlier plane XVII). — F. plan ground-plan, alt. (after plan adj. PLANE4) of †plant, f. planter (vb.) PLANT, after It. pianta plan of an edifice.