Chambord is a proper noun, most famously a French liqueur and a region in central France. It is pronounced with a stress on the first syllable, and the initial CH is a soft, palatal /ʃ/ like 'sh' in ship; the remainder forms a French-influenced vowel sequence. In English usage, the word often refers to the liqueur brand as well as the château, and is treated as a non-native, loanword with French pronunciation tendencies in formal contexts.
Full pronunciation guide