get to the bottom of

: to gain possession of

: to receive as a return : earn

: to obtain by concession or entreaty

: something begotten:

: offspring

: the entire progeny of a male animal

: a document of release from obligation in Jewish law

: a religious divorce by Jewish law

: the underside of something

: a surface (such as the seat of a chair) designed to support something resting on it

: buttocks, rump

: to furnish (something, such as a chair) with a bottom

: to provide a foundation for

: to bring to the bottom

: of, relating to, or situated at the bottom (see ¹bottom)

: frequenting the lowest part or place : frequenting the bottom