1 adjectivetreoir- preftreorach adj1 c m uguiding principlestreoirphrionsabail mpl1, prionsabail threorachaunder the guiding influence of her mentorfaoi thionchar chomhairle a meantóra2 (also Guiding) nounshe began guiding at the age of twelvechuaigh sí sna Brídíní ag dhá bhliain déag