mutuaryCivil Law.|ˈmjuːtjuːərɪ| [ad. L. mūtuāri-us, f.mūtu-us borrowed: see mutual a. and -ary.] (See quot. 1856.) 1839[see mutuum].1856Bouvier Amer. Law Dict. (ed. 6) II. 196 Mutuary, [in] contracts, a person who borrows personal chattels to be consumed by him, and returned to the lender in kind.