A tool for boring a hole wider. / A device for rendering citrus juice. / A tool used to scrape carbon deposit from the bowl of a pipe.

(idiomatic, colloquial) To be authentic, true to oneself; to be cool. / (idiomatic, colloquial) In the imperative, an exhortation used as a departing salutation.

A dedicated space in a library, or similar institution of learning, set aside for reading. / A reference library.

Alternative spelling of lipreading

(informal) Genuine, true; serious, earnest.

Genuinely, truly.

A style of gaming in first-person shooters (FPS), where realistic ("real-world") settings are simulated by the gaming engine (to the best of its ability) and players use authentic military tactics to accomplish goals in the game.

(chemistry) the reaction of a halogen with a methyl-ketone to form a haloform

(pharmacy, medicine) A reaction to a medication that is unusual and unpredictable, specific to a particular person. Unlike allergy, it can occur on first exposure to the medication; unlike a side effect, it affects only very few individuals.

(chemistry) Any chemical reaction in which the concentration of some component varies over time or space in a regular periodic manner.