A family of Microsoft word processing software products for creating web, email, and print documents.
Word itself doesn't offer a way to do what you ask, though there may be a setting in your printer Properties that would allow it, or you could accomplish this with a small document in Publisher, which can print small documents (such as individual business cards) multiple times on a sheet.
As described in http://wordfaqs.mvps.org/2PagesPerSheet.htm, Word offers two ways to print multiple pages. The "pages per sheet" setting in the Print dialog reduces a full-sized page to print 2, 4, or more copies on a single page of the same size. The "2 pages per sheet" setting in the Page Setup dialog allows you to create half-sized pages and print them on a single sheet. Neither of these will do what you want.
If your printer can accommodate "Statement"-sized paper (5.5" x 8.5"), then you could use "Book fold" to set up your document as a booklet and print it on the smaller paper (even if you have to cut the paper to size yourself). This would actually work better than trying to print and cut and staple individual pages. The referenced article also describes booklet setup.