The seed of an annual plant grown in a few countries for the production of fibre and seed, and in most countries for the production of seed only. The seeds have a medium quantity of oil proteins and carbohydrates. The oil is mainly used for industrial purposes. (Core Commodities Concepts and Definitions, FAOSTAT2 Commodity Listing, Statistics Division, FAO, 2005.)
Linseed meal is the by-product of oil production from linseeds (Linum usitatissimum L.). Unlike other major meals (soybean, sunflower and rapeseed), the major source of linseed meal available for livestock feeding is the oil-rich expeller type rather than solvent-extracted meal, which is less commonly used. (https://www.feedipedia.org/node/735)