(botany, of leaves) Having a large terminal lobe and smaller rounded lobes toward its base.
1976, T. G. Tutin, Flora Europaea, Volume 4: Plantaginaceae to Compositae (and Rubiaceae), page 72,
Basal leaves simple, lyrate or pinnatifid; cauline leaves 1- to 2-pinnatifid, pinnatisect or simple.
noun
A long feather with a shape similar to the arm of a lyre, found in the tail of lyrebirds.