Asks the interlocutor for their identification

(obsolete) To reach for, get at, obtain, get hold of.

A rule stating that an airplane designed with the same cross-sectional area distribution in the longitudinal direction as the Sears-Haack body generates the same wave drag as this body, largely independent of the actual shape; used in aerodynamics to reduce drag, typically by narrowing the fuselage at the wing roots.

A request for information about the listener's (or listeners') religious beliefs.

(soccer) The area of the pitch, extending six yards from the goal, from which a goal kick is taken.

(UK, Ireland, colloquial, US, obsolete) Expressing mock despair at somebody's outrageous behaviour.

Asked mostly by doctors and nurses to ascertain whether certain drugs should not be given to patients, as they may interact adversely with other medications.

(software engineering) Given a large enough beta tester and codeveloper base, almost every problem will be characterized quickly and the fix will be obvious to someone.

(rhetorical question, colloquial) Used to emphasize that life passes quickly.

The most valuable things in life (e.g.: friendship, courtesy) cost nothing.