splinter (splinters plural & 3rd person present) (splintering present participle) (splintered past tense & past participle )
1 n-count A splinter is a very thin, sharp piece of wood, glass, or other hard substance, which has broken off from a larger piece.
...splinters of glass., ...a splinter in the finger.
2 verb If something splinters or is splintered, it breaks into thin, sharp pieces. The ruler cracked and splintered into pieces... V prep/adv The stone rocketed into the glass, splintering it. V n
splinter group (splinter groups plural )A splinter group is a group of people who break away from a larger group and form a separate organization, usually because they no longer agree with the views of the larger group. n-count