Jenny is seventeen years old. a US magazine for teenage girls, containing pictures and articles about fashion, health, popular music, boys, etc, and answers to readers' questions about personal problems. In the UK there is a similar magazine called J-17. the number 17
The number greater by one than sixteen; the sum of ten and seven; seventeen units or objects
The cardinal number occurring after sixteen and before eighteen, represented in Roman numerals as XVII and in Arabic numerals as 17. Ordinal: seventeenth