the millennium bug

(law) The legal process of verifying the legality of a will. / (law) A copy of a legally recognised and qualified will. / Clipping of probate court. / (obsolete) proof

(transitive) To establish the legality of (a will).

(euphemistic) A child who is particularly difficult to raise or educate, especially due to a lack of self-control and disruptive and antisocial behavior.

Something easy, not difficult, not posing problems.

certainly, sure (said when granting a request) / no thanks is necessary; you're welcome (said in response to an expression of gratitude)

An observation that contradicts an accepted law or theory.

A mental representation of a particular problem, including initial, final and possible intermediate states

(mathematics) A measurable space having a unit measure

(space science) A robotic space vehicle designed to voyage beyond Earth's orbit.