| Language | Reflex(es) | Gloss | Grammar | Sources |
|---|
| English |
| Old English | bræg(e)n, bragen | brain | n.neut | W7 ASD LRC |
| Middle English | brain, brayn | brain | n | W7 MEV LRC |
| English | brain | portion of vertebrate central nervous system: organ of thought/neural coordination | n | AHD W7 LRC |
| English | bregma | junction (in skull) of coronal/sagittal sutures | n | AHD W7 LRC |
| West Germanic |
| Old Frisian | br(e)in | brain | n.neut | ASD LRC |
| Dutch | brein | brain | n.neut | ASD LRC |
| Middle Low German | bregen | brain | n.neut | W7 LRC |
| Italic |
| Late Latin | bregma | front part of the head | n.neut | W7 LRC |
| New Latin | bregma, bregmatos | junction between two skull structures | n.fem | W7 LRC |
| Hellenic |
| Greek | brechmos | front part of head | n.masc | W7 LRC |