noun, masculine/ˈɡɾano/plural: granos
grain (the seed of various grass food crops); grain, seed, kernel, bean (a single seed of certain crops); grain (a single similar particle of various substances); pimple, blackhead (a blocked skin pore, typically inflamed, painful, and filled with pus); point (the main intent or focus of a conversation)
“un grano de arroz” — a grain of rice
Inherited from Old Spanish grano, from Latin grānum, ultimately from Proto-Indo-European *ǵr̥h₂nóm. Cognate with Galician gran, Portuguese grão, and Catalan gra.