Il disparut en un tour de main = He disappeared in an instant, in a twinkling.
Il a une chambre grande comme la main = He has a room not big enough to swing a cat in.
En venir aux mains = To come to blows.
Bas les mains = Hands off.
Les deux armées en sont aux mains = The two armies are in close combat, have come to close quarters.
Je me perds la main = I am getting rusty.
Je tirais au pistolet pour me faire la main = I practised pistol-shooting to get my hand in.
Il y a mis la dernière main = He put the finishing touch to it.
Il a fait cela haut la main = He did it with the greatest ease.