cast-iron adjective definition, meaning - what is cast-iron adjective in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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cast-iron

adjective uk   /ˌkɑːstˈaɪən/  us   /ˌkæstˈaɪrn/
cast-iron guarantee, alibi, etc. a guarantee, alibi, etc. that can be trusted completely: Can you give me a cast-iron guarantee that the work will be completed on time? [before noun] very strong: He has a cast-iron stomach - he can eat anything.
(Definition of cast-iron adjective from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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