Purchaser (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">purchaser</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that purchaser can be written as buyer)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for buyer that I've seen before include "Caveat emptor - . . . . . beware" , "One who seeks to purchase" , "customer" , "Selector of stock" , "Shopper" .)
(Other definitions for owner that I've seen before include "Person with legal title to something" , "The one in lawful possession" , "Person having property" , "Title-holder" , "The person in lawful possession" .)