A syndrome characterized by pain or discomfort seemingly originating from the contact of the posterior surface of the patella (back of the kneecap) with the femur (thigh bone).

A check (financial instrument) that is not written out and signed by the drawer, but verbally authorized over the telephone and then printed and stamped by the payee.

Fast and energetic. / (often nautical) Brisk and fresh.

plural of phenylacetamide