i Register
In some senses, granum is marked as obsolete. Watch for register when choosing this word.
noun
A stack-like structure in plant chloroplasts that contain chlorophyll; the site of photosynthesis.
noun
One's grandmother.
Each of 'em has a ſev'ral Gin, / To catch Intelligences in. / Some by the Noſe vvith fumes trapan 'em, / As Dunſtan did the Devils Grannum.