1 noun personsinsear masc1 c m uto trace your ancestorsdo shinsir a rianú siarmy ancestors came from Corkas Corcaigh a tháinig mo shinsir, de bhunadh Chorcaí mé, ba as Corcaigh mo mhuintir2 noun animal, plant, etcsinsear masc1 c m usinsearach masc1 c m uthe two plants share a common ancestortá sinsearach coiteann ag an dá phlanda, tháinig an dá phlanda ón bplanda céanna3 noun earlier form of sthréamhtheachtaí masc4 c m uit's the ancestor of the modern carréamhtheachtaí charr an lae inniu atá ann, is uaidh a tháinig an carr comhaimseartha