Correct

同桌

/ tóng zhuō / 
Strokes

Definition

desk-mate/seat-mate

Example

As a Verb

share a desk/table

1
Wǒmen
我们
zēng
曾
tóngzhuō
同桌
sān
三
nián
年
  
。

We were deskmates for three years.

2
Tóngzhuō
同桌
chīfàn
吃饭

eat at the same table

As a Noun

deskmate