[EricH]

Freshman (n.) Team go-fer and filer of all sharp corners.
Sophomore (n.) A freshman who came back and is now in charge of making said sharp corners.
Junior (n.) A sophomore who came back to lead the current crop of sophomores.
Senior (n.) A student team member (and possibly leader) who will not be a student team member for very long. Usually found by grabbing last year's juniors.
Rookie (n.) A person or team who doesn't know what they're getting into in FRC because it's their first time.
2nd-Year Veteran (n.) See Rookie, but with a little more experience.
Veteran (n.) A person or team who has been around a little while, knows what they're getting into, and still comes back. Also see lunatic.