From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( a.) Six and ten; consisting of six and ten; fifteen and one more.

(2): ( n.) The number greater by a unit than fifteen; the sum of ten and six; sixteen units or objects.

(3): ( n.) A symbol representing sixteen units, as 16, or xvi.

King James Dictionary [2]

Six'Teen, a. Six and ten noting the sum of six and ten.