From 照(て)れ (tere, “連(れん)用(よう)形(けい) (ren'yōkei, “stem or continuative form”) of the verb 照(て)れる (tereru).”) + 顔(かお) (kao). \r kao gao.
てれがお • (teregao) ←てれがほ (teregafo)?