| beef-witted | beef-brained, thick-headed, brainless |
| boiled-brain | hothead, maniac, headstrong fellow |
| brain | understand, comprehend, grasp |
| brain | murder, dash the brains out of |
| brain | (plural) witticisms, clever remarks |
| brained | furnished with a brain, addle-brained |
| brainsick, brain-sick | foolish, addle-headed |
| brainsick, brain-sick | mad, foolish, frantic |
| brain-sickly | foolishly, in such an addle-headed way |
| cote | [from the movement of dogs in hare coursing] overtake, outstrip, pass by |
| course | hunt hares [or other game] with hounds by sight |
| coursing | [hare-coursing] chasing, pursuing |
| fume | harmful vapour [rising from the stomach to the brain] |
| globe | head, brain |
| hare-heart | heart as timid as a hare |
| headpiece | brain, intellect |
| madcap | mad-brained fellow, lunatic |
| muset | [of a hare] hiding-place, lair |
| musit | [of a hare] hiding place, lair |
| pia mater | [Latin] dutiful mother: membrane covering the brain; brain |
| prain | Welsh pronunciation of 'brain' |
| skipper | light-brain, frivolous wretch |
| sodden-witted | stew-brained, limp-minded, alcohol-crazed |
| soho, so-ho | hunting cry when a hare is started |
| tickle-brain | type of strong drink |
| understand | use their brains |
| understanding | intellect, intelligence, brain |
| ventricle | cavity within the brain |
| wit | mind, brain, thoughts |