1.Wanting flesh; destitute of or deficient in fat; slim; not plump; slender; meager; thin; lank; as, a lean body; a lean cattle.
2.Wanting fullness, richness, sufficiency, or productiveness; deficient in quality or contents; slender; scant; barren; bare; mean; used literally and figuratively; as, the lean harvest; a lean purse; a lean discourse; lean wages. "No lean wardrobe." "Their lean and flashy songs." "What the land is, whether it be fat or lean." "Out of my lean and low ability I'll lend you something."
3.(Typog.) Of a character which prevents the compositor from earning the usual wages; opposed to fat; as, lean copy, matter, or type.