noun

• (informal, only in combination) A work in a specified number of parts.
  "The show was a two-parter, but we stopped watching halfway through."

noun

• (rare) That which parts, or draws apart.
  "Lateral parting of the hair is customary, while the pompadour and middle parting is a relatively unusual deviation, an oddity. This makes those who practice it conspicuous. It happening that the middle parters are mostly foppish the stigma of foppishness usually goes with the practice even when it is not merited."
• (archaic, slang) One who readily parts with money; a free spender.
  "Of course, if you do not follow our national poet's recommendation, and unless you are a good parter as well, you cannot expect to fill your stables with first-class animals, as you will ascertain from Mr. Cox or Messrs. Blackman that they do not find them without difficulty, or without paying a good round sum for every clinker they add to their stud."