Chelidon :: Chelidon (n.) The hollow at the flexure of the arm.
Chelidonic :: Chelidonic (a.) Of, pertaining to, or derived from, the celandine..
Chelidonius :: Chelidonius (n.) A small stone taken from the gizzard of a young swallow. -- anciently worn as a medicinal charm.
Trachelidan :: Trachelidan (n.) Any one of a tribe of beetles (Trachelides) which have the head supported on a pedicel. The oil beetles and the Cantharides are examples.