M.B. (Bachelor of Medicine)
macaronics
macerate
machine
machine cutting
machine learning
machine telegraphy
machine-man
machines stand idle
mackintosh
macroskopic
Mad Max
madden
made himself very clear
madhouse
maelstrom
Magdalene
magic lantern
magistral
magnesium
magnetism
magnicide
magnify
magpie lark
maid
maidenlike
mail cover
mailed fist
main
main flue
main storage
mains
maintain one's claim
maintenance
maintenance party
majesty
major base
majority
make
make (bez to)
make a bid for
make a dash for
make a fuss about
make a mess in one's pants
make a practice of
make a slip of the tongue
make allowances for
make an interest with
make away
make charge for