oil body
noun
1 Botany and Microbiology (in various eukaryotic microorganisms and plant tissues) an intracellular inclusion consisting of a core of neutral lipids surrounded by a membrane monolayer of phospholipids.
2 Botany an oil-containing appendage (also called an elaiosome) which occurs near the hilum of some seeds; an aril, caruncle, or strophiole.
Origin
Late 19th century; earliest use found in The Botanical Gazette. After German Oelkörper.