Correct

樘

/ chěng / 
Strokes

Definition

a pillar

Example

As a Noun

frame (of a door or window)

1
Chuāng
窗
  
/
ménchěng
门樘

window/door frame

As a Measure word

[used for a door or window and its frame]

2
Sìchěngchuāng
四樘窗

four windows

3
Liǎng
两
chěng
樘
mén
门

two doors