Whereabout; Whereabouts

Part of speech: noun (n.)

The place where a person or thing is; as, they did not know his whereabouts. Shak. A puzzling notice of thy whereabout. Wordsworth.

Part of speech: adverb (adv.)

1. About where; near what or which place; -- used interrogatively and relatively; as, whereabouts did you meet him

2. Concerning which; about which. "The object whereabout they are conversant." Hooker.