monarch
mon.arch or mo.nar.chi.al \'ma:n-*rk, -.a:rk\ \m*-'na:r-k*l, ma:-\ \-ke--*l\ n [LL monarcha, fr. Gk monarchos, fr. mon- + -archos -arc]h 1: a person who reigns over a kingdom or empire : as 1a: a sovereign ruler 1b: a constitutional king or queen 2: someone or something holding preeminent position or power 3: a large migratory American butterfly (Danaus plexippus) having ora nge-brown wings with black veins and borders and larvae that feed on milkweed - mo.nar.cha.l aj