expression, godan verb (-u)
mesh (gears); be in sync (people, organizations)
Literally describes gears meshing; figuratively used when people, plans, or organizations work together smoothly.
この機械は歯車が噛み合っていないようだ。
It seems the gears in this machine aren't meshing.
彼らは意見が
They couldn't agree and didn't get in sync.