Fin'i-al, n.

noun

n. [Lat. finire, to finish, end. See FINISH.] The knot or bunch of foliage, or flower, that forms the upper extremities of pinnacles in Gothic architecture; sometimes, the pinnacle itself.

Two ornate architectural finials are shown, one with a leafy design and the other with a branching stem.
Finials. “Finical taste.” Wordsworth.