Webster’s Revised Unabridged Dictionary · 1913
Whereabout
Where′a·bout′, Where′a·bouts′, adv.
1. About where; near what or which place; — used interrogatively and relatively; as, whereabouts did you meet him?
☞ In this sense, whereabouts is the common form.
2. Concerning which; about which. "The object whereabout they are conversant." Hooker.
Where′a·bout′, Where′a·bouts′, n. The place where a person or thing is; as, they did not know his whereabouts. Shak.
A puzzling notice of thy whereabout. Wordsworth.