Fourchette
Une bonne fourchette = A good trencherman.
Fourgon
*La pelle se moque du fourgon = The pot calls the kettle black.
Fourreau
*L’épée (or, la lame) use le fourreau = The mind is too active for the body.
[“A fiery soul, which, working out its way,
Fretted the pigmy body to decay.”
Dryden, Absalom and Achitophel, i.]
Il ne savait où se fourrer = He did not know where to hide his head.
Il faut qu’il fourre le doigt (or, more fam., nez) partout = He must have a finger in every one’s pie.