ハツカネズミ

(1)any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails

(2)細く通常は毛のない尻尾を持つ細長い体に先のとがった鼻と小さな耳を持つ小型のネズミに通常似ている数々の小型のげっ歯類のどれか

(3)brownish-grey Old World mouse now a common household pest worldwide

(4)旧世界産の灰褐色のネズミで今や世界中で家の害虫