Brim \Brim\, v. i. [imp. & p. p. {Brimmed}; p. pr. & vb. n. {Brimming}.] To be full to the brim. ``The brimming stream.'' --Milton. {To brim over} (literally or figuratively), to be so full that some of the contents flows over the brim; as, a cup brimming over with wine; a man brimming over with fun.