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 bill of divorce

:  a religious divorce by Jewish law

:  the underside of something

:  buttocks, rump

:  the surface on which a body of water lies

:  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