From 目白(めじろ) (mejiro, “Japanese white-eye”, tree) + 押(お)し (oshi, 連(れん)用(よう)形(けい) (ren'yōkei, “stem or continuative form”) of the verb 押(お)す (osu).), in reference to the supposed behavior of the tree.[1]
めじろおし • (mejiro-oshi) ←めじろおし (meziroosi)?