12-Letter Words Containing: _,A,D,O,P,R,R,S

• a clavier with strings that are plucked by plectra mounted on pivots

• To participate in a financial arrangement in which a tenant farmer pays for use of land with a share (part) of the crop raised on that land.

• any one of four endocrine glands situated above or within the thyroid gland

• a scientist who studies the growth and density of populations and their vital statistics

• An instrument which, placed in contact with the chest, graphically registers the comparative duration and intensity of the heart's movements

• a secret listener to private conversations