n.
   - a rough or unfinished drawing or painting. ▸a brief written or spoken account or description. 
- a short humorous play, scene, or performance.
- informal, dated a comical or amusing person or thing.
v.
 make a sketch of. 
▸
(sketch something out/in)
 give a brief account or general outline of.
Derivative
  
  Etymology
  C17: from Du. schets or Ger. Skizze, from Ital. schizzo, based on Gk skhedios ‘done extempore’.