The area under the eyes; commonly refers to under-eye bags, dark circles, swelling, or the skin beneath the eyes.
最近よく眠れていないせいか、目の下にクマができている。
Maybe because I haven't been sleeping well lately, I have dark circles under my eyes.
目の下が腫れて痛むなら、すぐに病院で診てもらってください。
If the area under your eyes is swollen and painful, see a doctor right away.
化粧で目の下のクマを隠す方法を教えてください。
Please tell me how to hide dark circles under the eyes with makeup.
In fisheries, the length measured from the eyes to the tail fin — a specific way of measuring a fish's length.
この種類は目の下で測ると平均30センチほどになる。
This species averages about 30 cm when measured from the eyes to the tail fin.
規格は目の下で測った長さに基づいて決められている。
The standards are determined based on the length measured from the eyes to the tail fin.