master gland mas·ter gland (mās’tər)
See pituitary gland.
noun, Marine Corps. 1. a noncommissioned officer ranking above a master sergeant. Abbreviation: Mgy Sgt.
[mas-ter, mah-ster] /ˈmæs tər, ˈmɑ stər/ noun 1. a person with the ability or power to use, control, or dispose of something: a master of six languages; to be master of one’s fate. 2. an owner of a slave, animal, etc. 3. an employer of workers or servants. 4. the male head of a household. […]
noun 1. an expert: a master hand at diplomacy. 2. great expertness: to show a master hand.
noun 1. a key that will open a number of different locks, the proper keys of which are not interchangeable. noun 1. a key that opens all the locks of a set, the individual keys of which are not interchangeable Also called pass key