Does won have a short U vowel?

No, "won" does not have a short "u" vowel sound. It has a long "u" sound, similar to the vowel sound in "moon" or "food".

Here's a breakdown:

* "won" has the vowel sound /wʌn/ (as in "sun")

* Short "u" sounds like the vowel in "cup" or "duck", which is represented by /ʌ/.

Therefore, "won" has a long "u" sound, not a short "u" sound.