A legendary king of Britain, said to have led the defence of Britain against Saxon invaders in the early 6th century.

(biochemistry) Any of a group of antimicrobial peptides in the skin secretion of phyllomedusine frogs

(zoology) A defensive posture adopted by several branches of the amphibian class, including, but not exclusive to, salamanders, toads, and certain species of frogs.

A Persian toll-collector.