(US, military, informal) A first-class cadet.
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(informal, by extension) Someone who does something for the first time; a debutant or newbie.
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(informal) Someone who is in the first year, or round, of something.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.