Mai
Mi-mai, queue d’hiver = The middle of May has usually three cold days (called Les saints de glace, May 11, 12, and 13).
Maigre
Faire maigre = To abstain from meat.
Faire maigre chère = To have poor fare.
Maigre comme un clou = As thin as a lath.
Il n’a ni sou ni maille = He has not got a rap, a brass farthing.
Avoir maille à partir avec quelqu’un = To have a bone to pick (a crow to pluck) with some one.