22

Symbol

 * 1) The cardinal number twenty-two.

Pronunciation

 * twenty / two

Noun

 * 1)  The .22 Long Rifle calibre.
 * 2)  A firearm chambered in that calibre.
 * 3)  The 22-metre line.

Etymology
Repetition of English 2, an informal abbreviation of too.

Phrase

 * 1)  That applies to me as well.
 * 2)  I agree.