splinter

nouns

a small thin sharp bit or wood or glass or metal
"he got a splinter in his finger"; "it broke into slivers"
is derived from
is derived from

verbs

withdraw from an organization or communion
"After the break up of the Soviet Union, many republics broke away"
divide into slivers or splinters
is derived from
break up into splinters or slivers
"The wood splintered"