An athlete either new to the sport or to a team or in his first year of professional competition, especially said of baseball, basketball, hockey and American football players
A rookie is someone who has just started doing a job and does not have much experience, especially someone who has just joined the army or police force. I don't want to have another rookie to train
A stage in a Digimon's life when it learns a unique attack It uses the Digivice to digivolve to this stage This Digimon is usually exceptionally strong
A rookie is a person who has been competing in a professional sport for less than a year
A newcomer to the sport, who's knowledge is lacking the finer points of what how and when