The cardinal number occurring after fifteen and before seventeen, represented in Arabic numerals as 16 and in Roman numerals as XVI.

plural of sixteen

plural of sixteener

(historical) During the American Civil War, a child who, having reached the age of 16, was discharged from a soldiers' orphan school.

plural of sweet sixteen

(sports) The round in a knockout competition before the quarterfinal, in which sixteen teams or competitors remain.

(nautical) Having sixteen masts.

Alternative form of round of 16

(US, informal) A girl's sixteenth birthday, or sixteenth-birthday party and a related coming of age party. / (bingo) sixteen

(basketball, US, informal) The sixteen teams participating in the regional semifinals of the NCAA Division I tournament, one of whom will become the national champion.