The term 'fix in place' can be described by two crossword solutions: MOOR (4 letters) and SECURE (6 letters). MOOR is a verb meaning to attach a boat or ship to a mooring, which is a permanent anchor or structure in the water. SECURE is a verb meaning to make something safe or stable, usually by fastening it in place. Together, these two words describe the action of fixing something in place, such as a boat or ship, so that it is SECURE and will not move.