splintering

To come apart into long sharp fragments.

“The tall tree splintered during the storm.”

To cause to break apart into long sharp fragments.

“His third kick splintered the door.”

(of a group) To break, or cause to break, into factions.

“The government splintered when the coalition members could not agree.”

To fasten or confine with splinters, or splints, as a broken limb.

The process or result of something being splintered.