/siks"teen"/ , n.
1. a cardinal number, ten plus six.
2. a symbol for this number, as 16 or XVI.
3. a set of this many persons or things.
adj.
4. amounting to 16 in number.
[ bef. 900; ME, OE sixtene; c. D zestien, G sechzehn, ON sextan. See SIX, -TEEN ]