Brain \Brain\ (br[=a]n), v. t. [imp. & p. p. Brained (br[=a]nd); p. pr. & vb. n. Braining.]

[1913 Webster]

1. To dash out the brains of; to kill by beating out the brains. Hence, Fig.: To destroy; to put an end to; to defeat. [1913 Webster]

There thou mayst brain him. --Shak. [1913 Webster]

It was the swift celerity of the death . . . That brained my purpose. --Shak. [1913 Webster]

2. To conceive; to understand. [Obs.]

[1913 Webster]

'T is still a dream, or else such stuff as madmen Tongue, and brain not. --Shak. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Brain \Brain\, v. t. [imp. & p. p. Brained; p. pr. & vb. n. Braining.]

1. To dash out the brains of; to kill by beating out the brains. Hence, Fig.: To destroy; to put an end to; to defeat.

There thou mayst brain him. --Shak.

It was the swift celerity of the death . . . That brained my purpose. --Shak.

2. To conceive; to understand. [Obs.]

?T is still a dream, or else such stuff as madmen Tongue, and brain not. --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)