[thuhn-der-burd] 
| (in the mythology of some North American Indians) a huge, eaglelike bird capable of producing thunder, lightning, and rain. |
| thun·der·bird (thŭn'dər-bûrd') n. A spirit of thunder, lightning, and rain in the form of a huge bird in the mythology of certain Native American peoples. |
Thunderbird messaging, open source
A complete free, open-source e-mail client from the Mozilla Foundation and therefore a true code descendent of the e-mail code in Netscape Navigator. The first non-beta release was in late 2004. The Firefox web browser is from the same source.
Thunderbird Home.
(2005-01-26)
dərˌbɜrd