The word draft used alone has mutliple meanings:

• An elemental and rough plan of a document, such as a manuscript or a piece of official government legislation. Important and lengthy documents often go through several drafts, becoming successivelly more refined at each stage until the final publishable product is produced.
• a breeze or light wind blowing through an enclosed space (British spelling draught).
• an enforced conscription by the government of young men into the military during a war.
• the depth of the lowest point of a ship or boat, usually with a full load, and thus the minimum depth of any waterway through which it needs to pass; also refers to the curvature of the sail.