Q , q /kjuː/ (plural Q’s, q’s) noun [uncountable and countable]
the 17th letter of the English alphabet ⇒ mind your p’s and q’s at mind²(23), ⇒ Q-tip

[TahlilGaran] Dictionary of Contemporary English ▲

Q., q. (also Q, q British English)
the written abbreviation of question:
a Q and A session (=a time when people can ask questions and get answers)
⇒ FAQ

[TahlilGaran] Dictionary of Contemporary English ▲

q
See: MIND ONE'S P'S AND Q'S.

[TahlilGaran] English Idioms Dictionary ▲

Q
Questionable (player's likelihood of participating) 
Quit

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

Q2
Second Quarter

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

Q4
Fourth Quarter

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲