en el diccionario PONS
I. first [fɜ:st, ingl. am. fɜ:rst] ADJ.
II. first [fɜ:st, ingl. am. fɜ:rst] ADV.
1. first (before others):
3. first (for the first time):
- case of first impression DER.
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III. first [fɜ:st, ingl. am. fɜ:rst] SUST.
IV. first [fɜ:st, ingl. am. fɜ:rst] PRON.
- first
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first in first out ECON., INFORM.
II. first-hand ADV.
- to experience sth first-hand
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