Compounds of たんこ

• たんこぶ
  (n) bump
  lump
  protuberance
  swelling
• べたんこ
  (adj-no) squished flat
• ぺたんこ
  (adj-na,adj-no) (1) crushed flat
  flattened
  squashed
  flat-topped
  (n) (2) (col) (m-sl) flat-chested girl
  (3) (on-mim) sound of a sticky rice cake sticking to something
• ぺったんこ
  (adj-na,adj-no) (1) crushed flat
  flattened
  squashed
  flat-topped
  (n) (2) (col) (m-sl) flat-chested girl
  (3) (on-mim) sound of a sticky rice cake sticking to something
• おたんこなす
  (n) fool
  twit
  idiot
  bird-brain
• 目の上のたんこぶ
  (exp) a thorn in one's side
  a pain in the butt (often someone higher in rank, ability, etc.)
  a person standing in one's way
  a superior who obstructs one's freedom of action