(North America) A cream at least 18 percent of which is fat.
(US standard of identity) Pasteurized cream at least 18 percent of which, but less than 30% of which, is milkfat, optionally homogenized, and optionally containing added flavor, nutritive sweetener, emulsifier, or stabilizer.
The standard of identity is from 21 CFR §131.155.
English Wiktionary. Available under CC-BY-SA license.