(intransitive) To come apart into long sharp fragments.The tall tree splintered during the storm.
(transitive) To cause to break apart into long sharp fragments.His third kick splintered the door.
PrescottAfter splintering their lances, they wheeled about, and ... abandoned the field to the enemy.
(figuratively, of a group) To break, or cause to break, into factions.The government splintered when the coalition members could not agree.The unpopular new policies splintered the company.
(transitive) To fasten or confine with splinters, or splints, as a broken limb.