The term PRINTER BUY is composed of two words: PRINTER and BUY. The first word, PRINTER, is a three-letter word that can be solved with the answer INK. A printer is a device that produces text and images on paper or other media by using INK. The second word, BUY, is a three-letter verb meaning to acquire something in exchange for money. Therefore, the term PRINTER BUY can be summarized as the act of purchasing a printer, which requires the use of INK.