gust 1 
(gŭst)
(gŭst)n.
1. A strong, abrupt rush of wind.
2. A sudden burst, as of rain or smoke.
3. An outburst of emotion.
intr.v. gust·ed, gust·ing, gusts
To blow in gusts.
[Probably from Old Norse gustr; see gheu- in the Appendix of Indo-European roots.]