system; to control; to regulate; variant of 製|制[zhi4]
Depicts cutting down a tree (未) with a knife (刂). Based on the original meaning "break". The meaning later shifted to "control".
《說文》：“制，裁也。从刀，从未。未，物成，有滋味，可裁斷。一曰止也。，古文制如此。”
break