1. Not represented in a drawing
   "The proposed building's interior was left undrawn in the initial sketches"
    
2. (of curtains) not pulled closed
   "She could see through the undrawn blinds"
    
3. Not yet accessed, used, or selected
   "The company had $2 million in undrawn credit"; "The lottery numbers were still undrawn"

See also: undelineated