Definitions of splinter:

• noun:   a small thin sharp bit or wood or glass or metal

  Example: "He got a splinter in his finger"

• verb:   break up into splinters or slivers

  Example: "The wood splintered"

• verb:   divide into slivers or splinters
• verb:   withdraw from an organization or communion
• name:  A surname (very rare: popularity rank in the U.S.: #67622)