1(coll.) to chat
2(literary) temporarily; for a while
3(literary) somewhat; slightly
4(literary) to depend upon
Examples
wǒ我xiàn zài现在bù不néng能hé和nǐ你liáo聊tiān天。
我现在不能和你聊天。
I cannot talk to you now.
我和她聊得很愉快。
I had a nice chat with her.
别闲聊了，开始工作。
Cut the chit-chat and get to work.