From 金玉(きんたま) (kintama, “testicles”) + 蹴(け)り (keri, “kicking, 連(れん)用(よう)形(けい) (ren'yōkei, “stem or continuative form”) of the verb 蹴(け)る (keru, “to kick”).”).
きんけり • (kinkeri)