Correct

涂鸦

/ túyā / 
Strokes

Definition

graffiti/scrawl/poor calligraphy/to write badly/to scribble

Example

As a Noun

poor handwriting/calligraphy

1
Xìnbǐtúyā
信笔涂鸦

write at random

As a Noun

scrawl; graffiti