Correct

笔挺

/ bǐtǐng / 
Strokes

Definition

(standing) very straight/straight as a ramrod/bolt upright/well-ironed/trim

Example

As an Adjective

(standing) erect; very straight; bolt upright

1
Bǐtǐng
笔挺
dì
地
zhàn
站
zhāo
着

stand upright

As an Adjective

well-ironed; trim

2
Kùzi
裤子
shàng
上
bǐtǐng
笔挺
de
的
zhéféng
折缝

sharp crease in one's trousers

3
Bǐtǐng
笔挺
de
的
xīzhuāng
西装

well-ironed/well-pressed suit