interlocking

Adjective

• linked or locked closely together as by dovetailing

Noun

• the act of interlocking or meshing
  • an interlocking of arms by the police held the crowd in check
    

• contact by fitting together
  • the engagement of the clutch
    
  • the meshing of gears
    

Related words

• Synonyms: 
  interlacing , interlinking , interwoven , mesh , meshing , interlock , engagement