taoiseach(redirected from An Taoiseach)
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n. pl. Taoi·sigh (-shē′) Irish
The prime minister of Ireland.
[Irish, from Old Irish toísech, first, leading, leader.]
(Government, Politics & Diplomacy) the prime minister of the Republic of Ireland
[from Irish Gaelic, literally: leader]
An Irish word meaning leader, used as the title of the prime minister of the Republic of Ireland.