Split  —v. (-tt-; past and past part. Split) 1 a break, esp. With the grain or into halves; break forcibly. B (often foll. By up) divide into parts, esp. Equal shares (they split the money). 2 (often foll. By off, away) remove or be removed by breaking or dividing. 3 a (usu. Foll. By on, over, etc.) Divide into disagreeing or hostile parties (split on the question of picketing). B (foll. By with) quarrel or cease association with. 4 cause the fission of (an atom). 5 slang leave, esp. Suddenly. 6 (usu. Foll. By on) colloq. Inform. 7 a (as splitting adj.) (of a headache) severe. B (of the head) suffer from a severe headache, noise, etc. —n. 1 act or result of splitting. 2 disagreement; schism. 3 (in pl.) Feat of leaping in the air or sitting down with the legs at right angles to the body in front and behind or on either side. 4 dish of split bananas etc. With ice-cream.  split the difference take the average of two proposed amounts. Split hairs make insignificant distinctions. Split one's sides laugh uncontrollably. Split up separate, end a relationship. [dutch]