monarch
n.
mid-15c., from Middle French monarque (14c.) or directly from Late Latin monarcha, from Greek monarkhes "one who rules alone" (see monarchy). As a type of large butterfly, from 1890.
〔李〕n.君主，最高统治者 [-arch=chief or ruler] ←mon（o）-[GK] =single单；one一
〔李〕n. 君主；最高统治者 [mon- =single] ←-arch [L，GK] =chief or ruler表示“首领；统治者”
〔蒋〕[mon-独→一人，arch统治者] 君主，最高统治者，国王
〔李〕[mon=one, alone单一；arch=ruler统治者→“only one ruler, or one who rules a country alone单独治理国家者”→] n. king of sovereign国王，君主