Cut your teeth
Meaning
Gain initial experience or training in something.
Usage
Used to describe newcomers learning their craft.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Refers to the first teeth emerging in infants, used metaphorically for first experiences.
British figurative usage dates to the 17th century.