Top Definition
NATO (military) code name for a Swamp donkey. May be used in conjunction with other phonetic letters (see below).
There are sierra-deltas on the perimeter of the bar.

Watch out for whiskey-tango sierra-deltas.
by BOB'nati November 21, 2009
6 Words related to Sierra-Delta

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×