firmware
first
first-aid
first base
first-begot
first-born
first-chop
first-class
first-classer
first-coat
first come first served
first come last served
first-cousin
first-day
first degree
First difference
first finger
first-floor
first floor
first-foot
first-footer
first-fruits
first-grade
first-hand
first harmonic
first-in first-out (FIFO)
first-lady
first lady
first name
first night