lyrate adjective 2noun 1forms 3 adjective2 •Shaped like a lyre. •Having a large terminal lobe and smaller rounded lobes toward its base.Basal leaves simple, lyrate or pinnatifid; cauline leaves 1- to 2-pinnatifid, pinnatisect or simple. — 1976 noun1 •A long feather with a shape similar to the arm of a lyre, found in the tail of lyrebirds. formslyrates · more lyrate · most lyrate