(cinematography) A technique where the top and bottom of the film frame are masked off in camera, as opposed to soft matte.

(meteorology) A freeze sufficiently long and severe to destroy seasonal vegetation and lead to ice formation in standing water and hard ground. 27°F (-3°C) is considered a threshold in the US.

A helmet, usually made from rigid plastic, used on construction sites to protect the head from falling objects.

A person who takes a firm, uncompromising position on some policy.

A sales technique of pressuring the potential buyer to agree to a purchase. / A sales transaction which is challenging for the sales person to make; any act or object of persuasion which is challenging.

(music) A rock music genre marked by a heavy regular beat, high amplification, and usually frenzied performances.

(idiomatic) Resentment, anger.

Alternative form of hardcore

(computer hardware) One of a series of parallel magnetic recording disks in a drive unit, used for the recording and retrieval of digital information; used especially in personal computers.

In severe difficulties; greatly affected by a problem.