noun
double-headed eagle
Refers specifically to the heraldic symbol of a two-headed eagle, used in coats of arms and emblems.
双頭の鷲は、ロシア帝国の紋章として知られている。
The double-headed eagle is known as the emblem of the Russian Empire.
Compound of 双頭 (double-headed) + の (possessive particle) + 鷲 (eagle). The term is a direct translation of the heraldic concept.