scribble

Short definition from Wiktionary

Verb

1. 1
   To write or draw carelessly and in a hurry.
2. 2
   To doodle.
3. 3
   To write badly; to work as an inferior author or journalist.
4. 4
   To card or tease (wool) coarsely; to run through a scribbler.

Noun

1. 1
   Careless, hasty writing, doodle or drawing