1The body of a person or animal — the whole physical body. The most common everyday meaning.
昨日転んで、体が少し痛い。
I fell yesterday and my body is a bit sore.
お風呂に入って体を温めた。
I took a bath to warm up my body.
毎日運動して体を動かすようにしている。
I try to move my body by exercising every day.
夏は体が疲れやすい。
My body gets tired easily in summer.
2The torso or trunk — the central part of the body, excluding the head and limbs.
腹筋を鍛えると体の芯が安定する。
Working your abs stabilizes your core.
荷物は体に近づけて持つと楽だ。
Holding a load close to your body makes it easier to carry.
3Build, physique, or figure — a person's physical shape or proportions.
彼は小柄な体だが、とても力が強い。
He has a small frame, but he's very strong.
モデルになるには体のラインが大事だ。
To be a model, the lines of your body matter.
トレーニングを続けて、体が引き締まってきた。
I've kept training, and my body has become toned.
4Health or physical condition — how one's body is doing.
体の調子が悪いので、今日は休みます。
I'm not feeling well today, so I'll take the day off.
無理をして体を壊さないでね。
Don't overdo it and ruin your health.
歳をとると、体が弱くなってくる。
As you get older, your body grows weaker.