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The Japanese word for captain. Captain is a somewhat, high class position given to people. It can also mean a leader of a group or team.
Ichigo: Hey Toshiro, aren't you looking short?

Toshiro: It's Hitsugaya-taichou (Captain Hitsugaya) to you! And don't call me short!
by MageSoren May 20, 2008
The person who tops in a homosexual relationship. Used more typically in Western manga, so the term isn't as popular as 'Seme', which is used in mainly yaoi.
"No way! I'm the Taichou in this relationship!"
by Yamsassi January 12, 2014