Meaning of lán:
lán
拦
Verb
to block sb's path; to obstruct; to flag down (a taxi)
Tā zài ménkǒu bǎ wǒ lán zhù le, bù ràng wǒ jìn qù.
他在门口把我拦住了,不让我进去。
He blocked my path at the door, not letting me in.
Jǐngchá shìtú lán zhù zuìfàn de qù lù.
警察试图拦住罪犯的去路。
The police tried to obstruct the criminal's path.
Wǒ zài lù biān huī shǒu xiǎng yào lán yī liàng chūzū chē.
我在路边挥手想要拦一辆出租车。
I waved my hand by the roadside to flag down a taxi.