Pincer, picker.
A word that starts with S and ends with X is sphinx.
The longest word that starts with an "s" and ends with an "r" is "supercomputer."
rondeau
rondeau
jar...
Czar is a 4 letter word. It begins with C and ends with R.
rutabaga
rotunda
Rota
air
rotator
AnswerRoar is a four letter word that starts with r and ends with r.AnswerI might add, rearAnswerI might add, roarAnswerI will add: ruer and rier