Rag maid about drawing (7)
I believe the answer is:
diagram
'drawing' is the definition.
(I know that diagram is a type of drawing)
'rag maid about' is the wordplay.
'about' indicates anagramming the letters.
'rag'+'maid'='ragmaid'
'ragmaid' with letters rearranged gives 'DIAGRAM'.
(Other definitions for diagram that I've seen before include "Simplified representation" , "Line drawing" , "Sketch - plan" , "A grid, Ma? (Anag)" , "Drawing to show how things work" .)