modoc. n. One of the several small dummies set up to be knocked over by baseballs at a carnival tent; hence, a stupid person.
mohosca. n. Muscle; energy used in work.
mojo. n. Any narcotic.
mokers, the. n. Despondency; dejection; the blues.
mokus. n., adj. 1. Drunk. 2. Liquor.
molasses. n. A good-looking used automobile displayed to attract customers to a used-car lot.
moldy fig. 1. A prude; a pedant; one whose views or tastes are old-fashioned. 2. Specif., a person who prefers traditional jazz to the progressive forms.
The Pocket Dictionary of American Slang. Eds. Harold Wentworth and Stuart Berg Flexner. Pocket, 1967.