Definify.com

Webster 1828 Edition

adv.

[where and about.]

Near what place. Whereabout did you meet your friend?

Near which place.

Concerning which.

The object whereabout they are conversant.

whereabout ‎(not comparable)

(archaic) About which; concerning which.
- Hooker
  the object whereabout they are conversant
About where.