a: camera obscura b: a device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for television broadcast). â off camera.
serf. 1  a person in a condition of servitude, required to render services to a lord, commonly attached to the lord's land and transferred with it from one owner to another. 2  a slave.
Learner's definition of SERVILE. [more servile; most servile] formal + disapproving. : very obedient and trying too hard to please someone. In the presence of an authority, he immediately adopted a servile [=submissive] attitude. a servile assistant.