to disappear into; to be lost in; to slip into; to get mixed in among / to do something under the cover of (confusion, etc.) / to be almost indistinguishable; to be confusingly similar

(obsolete) Walnut Grove (a city in California, United States)

having amazing arm strength

(historical) a title of Fujiwara no Korechika, Heian-period nobleman, who first assumed this post