from The American Heritage® Dictionary of the English Language, 4th Edition
- pro. The thing or things with which.
- conj. By means of which.
- adv. Obsolete With what or which.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. With which; with what.
- n. Something with which; the means by which.
from the GNU version of the Collaborative International Dictionary of English
- adv. With which; -- used relatively.
- adv. With what; -- used interrogatively.
- n. The necessary means or instrument.
from The Century Dictionary and Cyclopedia
- With what or whom?
- With which; also, as compound relative, that with which.
- [Wherewith is colloquially used as a noun iu the phrase the wherewith (compare the commoner equivalent, phrase the wherewithal)—that is, what is necessary or required; means.
From where + with. (Wiktionary)