金汤 jīntāng impregnable fortress Origin Definitions Defs Strokes Stroke Words Sentences Sents 固若金汤 gùruòjīntāng impregnable (idiom) strongly fortified and invulnerable to attack; literally as secure as a city protected by a metal wall and a moat of boiling water金汤力 jīntānglì gin and tonic (loanword) gin and tonic