Have legs is a phrase that is often used to describe an object or person that is able to stand on its own. The crossword solutions for this phrase are LAST, which is a four letter word meaning 'remaining after all others have been used or mentioned, ' and ENDURE, which is a six letter word meaning 'to remain in existence; LAST.' Together, these two words can be used to describe an object or person that is able to stand on its own and remain in existence for a long period of time.