plural of back-side

Alternative spelling of fullback

(idiomatic) The means of one's own punishment or downfall.

Alternative form of rod for one's back

plural of baby buggy

(anatomy) The relatively narrow, lumbar region of the back.

plural of back foot

A surname.

(US, dated) A person who subscribes complacently to materialistic middle-class ideals.

(dated) Alternative letter-case form of babbitt (“a soft white alloy of variable composition (for example, nine parts of tin to one of copper, or fifty parts of tin to five of antimony and one of copper) used in bearings to diminish friction”)