The term 'HIDE NOR FUR' is a phrase used to describe something that is completely hidden or concealed. It is derived from the Old English phrase 'hiden ne furh', which literally translates to 'hidden not even a hair'. This phrase is often used to describe something that is so well hidden that it cannot be seen, heard, or felt. The crossword solutions for this term are NOR (3 letters) and FUR (3 letters). NOR is an abbreviation of the word 'NOR', which means 'not either'. FUR is an abbreviation of the word 'FUR', which refers to the thick coat of hair on an animal. Together, these two words form the phrase 'HIDE NOR FUR', which is used to describe something that is completely hidden or concealed.