(as a closing in a message) Initialism of very respectfully.

Alternative form of three Rs

(automotive) Initialism of road and track.; used to indicate a high performance edition of a vehicle or part, capable of use for everyday driving as well as amateur racing.

Radiotelephone; radiotelegraph.

(phonology) The omission of the sound of a letter "r" after a vowel.

plural of r-word

(euphemistic) The word rape, regarded as a vulgar or taboo word. / (euphemistic) The word retard, regarded as a vulgar or taboo word.

(medicine) Initialism of rule out: used to indicate that a certain possible diagnosis should be considered, and appropriate tests performed to rule it out.

An "r" that is pronounced only because it is closely followed by another morpheme beginning with a vowel sound, as in water ice, in non-rhotic varieties of English.

(grammar) A referential expression, such as "John" or "the dog": one that, unlike pronouns and anaphora, independently refers to, i.e., picks out, an entity in the world.