Top Definition
1. a person that is admirable because of their uncanny ablilies, size, attitude, or balls
2. a thing that has a really awesome feature or is simply very useful to you. so useful that it almost gets u off.
1. Arnold Schwartzeneeger is a sick unit.
2. This microwave is one fucking sick unit.
by Kayla Jean December 03, 2005
5 Words related to sick unit

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