[1] : The Collaborative International Dictionary of English v.0.48

seventeen \sev"enteen`\, a. oe. seventene, as. seofont=yne,
   i. e., seven-ten. cf. seventy.
   one more than sixteen; ten and seven added; as, seventeen
   years.
   1913 webster
see also:
seventy 

[2] : The Collaborative International Dictionary of English v.0.48

seventeen \sev"enteen`\, n.
   1. the number greater by one than sixteen; the sum of ten and
      seven; seventeen units or objects.
      1913 webster

   2. a symbol denoting seventeen units, as 17, or xvii.
      1913 webster

[3] : WordNet (r) 2.0

seventeen
     adj : being one more than sixteen syn: 17, xvii
     n : the cardinal number that is the sum of sixteen and one syn:
          17, xvii
see also:
17 xvii xvii 

Seventeen >> S Words
Seventeen, definition of term: Seventeen
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