Definition: "suffers defeat"

This is a charade - where two or more parts are joined together to form the answer word.

Look for a word meaning 'finishes' or 'shuts', then add the Roman numeral for 'a hundred' to get a word meaning 'suffers defeat'.

Answer: LOSES | 'Finishes' gives you CLOSES, then 'down a hundred' means remove C (Roman numeral for 100), leaving LOSES = 'suffers defeat'