Used binoculars are a type of optical device that consists of two telescopes mounted side-by-side and aligned to point in the same direction. They are used to magnify distant objects, allowing the user to see them more clearly. The crossword solutions for the term 'used binoculars' are 'PEERED' (6 letters) and 'EYED' (4 letters). Peering is the act of looking intently at something, while eyeing is the act of looking at something with attention or interest. Both words can be used to describe the action of using binoculars to observe distant objects.