Top Definition
A sword of Japanese origin, also called a 'nodachi'. It looks like an extra long katana. The sword was notoriously difficult to make and wield and was mainly used for killing mounted cavalry troops.
I got cut in half by an odachi.
by LorgSkyegon October 23, 2004
1 more definition
A lengthy man thingy that can cut people in half because it is very thin and sharp.
OMG Joey cut Scott in half with his odachi
by Knifeinablender January 11, 2005

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