Croat UK /ˈkɹəʊ.æt/US /ˈkɹoʊ.æt/noun 3adjective 1forms 1 noun3 •A native or inhabitant of Croatia; a person of Croatian ethnicity. •The Croatian lect.It almost made him laugh. What could he possibly do in Ohio? Did Cleveland have a pressing need for secret policemen who spoke Croat? — 2012 •(old-fashioned) An irregular soldier, generally from Croatia. adjective1 •Synonym of Croatian. formsCroats