(idiomatic) In the power of; defenceless/defenseless against.

A collegiate degree, usually involving three to four years of study (about 120 semester hours) in liberal arts.

(slang) Not mentally sound; insane. / (idiomatic) Stupid.

By the actions of (someone).

(idiomatic) An alcoholic drink, particularly when taken the morning after to cure a hangover.

(physics) The ratio between (1) the magnitude of the force of friction which a surface produces on an object (moving along the surface or being pressed statically against it) and (2) the magnitude of the normal force which is produced by the surface on the object and which is perpendicular to that surface.

(idiomatic) An occupation, role, social class, or lifestyle.

(law) The age at which the rights and privileges of an adult are legally granted or recognized; i.e.; the age where a person ceases to be a minor legally and becomes a legal adult.

(idiomatic) A person's general appearance, manner, or style.

(informal, idiomatic) Without any hesitation; instantly.