Compounds of

• ボム
  (n) bomb
• ボラ
  (n) (1) (uk) striped mullet (Mugil cephalus)
  (2) (obsc) redlip mullet (Chelon haematocheilus)
• ボン
  (n) good (fre: bon)
  (P)
• ポア
  (n) death (Aum Shinrikyou term)
• ポカ
  (n,vs) (col) blunder
  (careless) mistake
  error
• ポケ
  (n) poke (Hawaian raw-fish salad)
• ポジ
  (n,adj-no) (abbr) positive
• ポス
  (n) (comp) POS
• ポリ
  (pref) (1) poly-
  (n) (2) polyethylene
  (n) (3) (abbr) (sl) (derog) police
  (P)
• ポロ
  (n) polo
  (P)
• マイ
  (pref) my
  one's own
  personal
  privately owned
  (P)
• マキ
  (n) (uk) yew plum pine (Podocarpus macrophyllus)
• マギ
  (n) magi (gre: magos)
  magus
• マグ
  (n) mug
• マシ
  (adj-na) (1) better
  less objectionable
  preferable
  (n-suf) (2) more
  increase
  extra
  (n) (3) (arch) increase
  growth
• マジ
  (adj-na,n) (1) (sl) serious (not capricious or flirtatious)
• マス
  (n) (1) mass
  (n) (2) (col) (abbr) masturbation
  (P)
• マス
  (n) (uk) trout
  sea trout
• マゾ
  (n) (1) (abbr) masochist
  (2) masochism
  (P)
• マナ
  (n) manna
• マネ
  (n) (abbr) manager (esp. of school sports clubs)
• マフ
  (n) muff
• ママ
  (n) (1) Mama
  (2) female proprietress (of a bar, etc.)
  (P)
• マヤ
  (n) Maya (ancient Indian tribe in Central America)
  (P)
• マリ
  (n) Mali
• マン
  (n,n-suf) man
  (P)
• マ行
  (n) classification for Japanese verb with the dictionary form ending in "mu"
  "ma" column or row of the kana syllabary
• ミー
  (n) me
• ミサ
  (n) (Catholic) mass (lat: missa)
  (P)
• ミス
  (n,vs) (1) mistake
  error
  failure
  (n) (2) Miss
  (n) (3) myth
  (P)