have (something) back

: some indeterminate or unspecified thing

: some indeterminate amount more than a specified number

: a person or thing of consequence

: in some degree : somewhat

used as an intensive giving adverbial force to an adjective

: the rear part of the human body especially from the neck to the end of the spine

: the body considered as the wearer of clothes

: capacity for labor, effort, or endurance

: to, toward, or at the rear

: in or into the past : backward in time

: to or at an angle off the vertical

: being at or in the back

: distant from a central or main area

: articulated at or toward the back of the oral passage : formed deep within the mouth

: to support by material or moral assistance

: substantiate

: to assume financial responsibility for