the GNU version of the Collaborative International Dictionary of English
ad. Into which; -- used relatively.
ad. Into what; -- used interrogatively.
The Century Dictionary and Cyclopedia
Into what?
Into which.
Word Usage
"Then he raised his head and sighing said, O Nuzhat al-Zaman, thou art my very sister and I cry: ‘I take refuge with Allah from this sin whereinto we have fallen,’ for I am Sharrkan, son of"