Meaning of cún:
蹲
(dialect) to sprain one's foot or leg due to a sudden impact or landing; to crouch; to squat; to stay (somewhere)
Xiǎoxīn bié cóng nàbiān tiào xiàlái, bùrán nǐ kěnéng huì cún dào jiǎo.
小心别从那边跳下来,不然你可能会蹲到脚。
Be careful not to jump down from there, or you might sprain your foot.
Tā bù xǐhuān cháng shíjiān dūnzhe.
他不喜欢长时间蹲着。
He doesn't like crouching for a long time.
Tā zài gōngyuán lǐ ānjìng de dūnzhe, guānchá mǎyǐ de huódòng.
他在公园里安静地蹲着,观察蚂蚁的活动。
He was quietly squatting in the park, observing the ants' activities.
Wǒ dǎsuàn zài jiālǐ duō dūn jǐ gè xiǎoshí.
我打算在家里多蹲几个小时。
I plan to stay at home for a few more hours.