EN Rimas en Inglés desde first floor hasta first-rate
- first floor
- first former
- first grader
- first harmonic
- first lady
- first language acquisition
- first lieutenant
- first line indent
- first loading section
- first mile service provider
- first name
- first of all
- first offender
- first option
- first out
- first performance
- first phase
- first press
- first prize
- first rank
- first route
- first schools
- first shell
- first sip
- first supplier
- first thing in the morning
- first thing one knows
- first things first
- First World War
- first writing
- first-
- first-aid station
- first-angle projection
- first-born
- first-choice route
- first-class
- first-day cover
- first-degree
- first-degree murder
- first-generation computer
- first-generation image
- first-in-first-out mode
- first-in-first-out store
- first-in-last-out mode
- first-level address
- first-order approximation
- first-order predicate logic
- first-order treatment
- first-person-shooter
- first-rate