悬河

"hanging" river (an embanked one whose riverbed is higher than the surrounding floodplain) / (literary) waterfall / cataract / (fig.) torrent of words

to hang or suspend / to worry / public announcement / unresolved / baseless / without foundation

river / CL:條|条[tiao2],道[dao4]

mouth like a torrent (idiom) / eloquent / glib / voluble / have the gift of the gab