Meaning of lā:
lā
啦
Onomatopoeia
(onom.) sound of singing, cheering etc
Tā xǐhuān zài línyù shí gāoshēng chànggē, chángcháng chàng dào “là là là”.
他喜欢在淋浴时高声唱歌，常常唱到“啦啦啦”。
He likes to sing loudly in the shower, often singing "la la la."
Particle
(phonetic); sentence-final particle, contraction of 了啊, indicating exclamation; particle placed after each item in a list of examples
Wǒmen qù kàn diànyǐng la!
我们去看电影啦！
Let's go watch a movie!
Jīntiān de biǎoyǎn tài jīngcǎi la!
今天的表演太精彩啦！
Today's performance was fantastic!
Jīntiān wǒmen qù páshān, kàn fēngjǐng, hái chīle yīxiē xiǎochī la.
今天我们去爬山，看风景，还吃了一些小吃啦。
Today we went hiking, enjoyed the scenery, and also had some snacks.
Verb
(dialect) to chat
Tāmen zhèngzài kètīng lǐ liáotiān la.
他们正在客厅里聊天啦。
They are chatting in the living room.
