crutch crutch /ˈkrʌtʃ/

noun

1. () A wooden or metal staff that fits under the armpit and reaches to the ground; used by disabled person while walking  ( crutch )
   a wooden or metal staff that fits under the armpit and reaches to the ground; used by disabled person while walking
    After his injury, he needed a crutch to help him walk.
   After his injury, he needed a crutch to help him walk.
   
   
2. () Anything that serves as an expedient  ( crutch )
   anything that serves as an expedient
    He uses drugs as a psychological crutch
   he uses drugs as a psychological crutch