Whereinto
Pronunciation : Where`in*to"
Part of Speech : adv.
Definition : 1. Into which; -- used relatively. Where is that palace whereinto foul things Sometimes intrude not Shak. The brook, whereinto he loved to look. Emerson.
2. Into what; -- used interrogatively.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder