purchaser

Concise Oxford English Dictionary © 2008 Oxford University Press:
purchase/ˈpɜːtʃəs/

▶verb

• 1 buy (something).

• 2 Nautical haul up (a rope, cable, or anchor) by means of a pulley or lever.

▶noun

• 1 the action of buying.

  ■ a thing bought.

  ■ Law the acquisition of property by one's personal action rather than by inheritance.

• 2 firm contact or grip.

• 3 a pulley or similar device for moving heavy objects.

• 4 archaic the annual rent or return from land.

– derivatives
purchasable adjective,
purchaser noun.

– origin ME: from OFr. pourchacier ‘seek to obtain or bring about’.