HSK C4/W3/V5
Correct

寸

/ cùn / 
Strokes

Definition

a unit of length/inch/thumb

Example

As a Measure word

cun ［a unit of length, equal to 1/3 decimetre］

As an Adjective

very short/little/small

As an Adjective

coincidental

As a Noun

cunkou pulse ［pulse on the wrist］