(mathematics) The bijective numeration of digits 1 through k inclusive that uses position in powers of k to encode an integer's expansion.

A bill of high-quality forged US currency.

Our models of the world, and our sensations of the world, are not the true world.

To be less than completely certain; to lack support.

(US, informal) A one-thousand dollar banknote.

(idiomatic) An apophasis used by a speaker to introduce, despite claiming not to address, a given point of discussion.

Alternative form of top notch (“of the highest quality”)

Not for the moment, though expected later. / Not quite; not exactly.

(Canada, US, music) A semibreve, a musical note four beats long in 4/4 time.

(idiomatic) Dictated, as to a secretary or stenographer, but not proofread by the person who dictated it.