What does "rider" mean in blues lyrics?

Question

As in "goin down to Rosedale, take my rider by my side" or "I know you rider".

Answer 1

yea, or also a gun sometimes in songs.
props to the robert johnson lyric. and to the traditional song that the grateful dead used to play all of the time.

Answer 2

It means two things. It means a guitar or it could mean a loose sexual partner.

Answer 3

dont no