/ traɪˈbjuːnl; NAmE / noun
[ C +sing./pl. v . ] a type of court with the authority to deal with a particular problem or disagreement :
She took her case to a tribunal.
a disciplinary tribunal
—see also industrial tribunal
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WORD ORIGIN
late Middle English (denoting a seat for judges): from Old French , or from Latin tribunal raised platform provided for magistrate's seats, from tribunus , literally head of a tribe, from tribus tribe. The current sense dates from the early 20th cent.