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1.
A person who steals women’s underwear off clothes lines and masturbates into them.
My underwear have gone missing off the line, I really hope they didn't end up with a showdropper.
by chernobylspice December 10, 2003
 
2.
A person who steals clothes from a clothesline; Australian usage.
"I lost my satin nightie to a snowdropper"
by Alfred C, Webber November 16, 2003
 
3.
A person who stealing women’s underwear off clothes lines.
John scoped out the house and got some undies from the line, what a snow dropper.
by The Pud July 04, 2007