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Short for cockatiel. A slang word used by bird breeders and some pet owners for their feathered friends of the cockatiel variety.
Aren't the Tiels cute little birds?
by OneBadAsp October 15, 2006
Composed of at least five jubs. The highest level of the UMBC Jib hierarchy. Very rarely mobilized, and often with disastrous results.
"My legs and left arm were all stolen by the same tiel back in 'nam."
by Ultimastrike November 21, 2004