(zoology) Any member of the Chitonidae.

(astronomy) A constellation of the southern sky, said to resemble a pendulum clock. It lies between the constellations Fornax and Dorado.

(biochemistry) A particular type of metalloprotease, namely membrane metallo-endopeptidase (MME)

The person who works the floor (deals with customers), a floor manager. / A floorman or floorwoman in a casino.