What does 弟 (otouto | おとうと) mean in Japanese?

The Japanese word

姪とは兄弟の娘を言う。
mei to wa kyōdai no musume o iu.
A niece is a daughter of one's brother or sister.

私の弟はテレビを見ている。
watashi no otōto wa terebi o mi te iru.
My little brother is watching TV. | My brother is watching TV. | My younger brother is watching TV.

遠くの兄弟より、良き隣人。
tōku no kyōdai yori, yoki rinjin.
A good neighbour is better than a brother far off.

僕はよく弟と間違えられる。
boku wa yoku otōto to machigae rareru.
I am often mistaken for my brother.

彼女は弟に腹を立てていた。
kanojo wa otōto ni hara o tate te i ta.
She was out of temper with her brother.

弁当を弟に分けてあげなさい。
bentō o otōto ni wake te age nasai.
Share your lunch with your brother.

彼女は優しく弟を抱きしめた。
kanojo wa yasashiku otōto o dakishime ta.
She embraced her brother warmly.

彼女は弟に犬の散歩をさせた。
kanojo wa otōto ni inu no sanpo o sa se ta.
She got her brother to walk the dog.

僕と弟は食物の好みが一緒です。
boku to otōto wa shokumotsu no konomi ga issho desu.
My brother and I like the same food.

妹は３歳年下で弟は４歳年下です。
imōto wa san sai toshishita de otōto wa yon sai toshishita desu.
My sister is three years younger than I and my brother is four years younger.

母は弟に黄色い傘を買ってやった。
haha wa otōto ni kīroi kasa o katte yatta.
Mother bought my brother a yellow umbrella. | My mother bought my little brother a yellow umbrella. | My mother bought my brother a yellow umbrella.

彼女は弟の宿題を手伝ってやった。
kanojo wa otōto no jukudai o tetsudatte yatta.
She assisted her brother with his homework. | She helped her younger brother with his homework.

ども、愚弟がお世話になってるようで。
domo, gutei ga osewa ni natteru yō de.
Thanks, I hear you've been taking care of my little brat of a brother.

僕は弟と一緒の部屋で暮らしています。
boku wa otōto to issho no heya de kurashi te i masu.
I share an apartment with my brother.

母は彼に弟の世話をしなさいといった。
haha wa kare ni otōto no sewa o shi nasai to itta.
Mother told him to look after his younger brother.

母、弟、祖父母と一緒に住んでいます。
haha, otōto, sofubo to issho ni sun de i masu.
I live with my mother, brother and my grandparents.

彼女はうまく弟からその手紙を取り上げた。
kanojo wa umaku otōto kara sono tegami o toriage ta.
She coaxed the letter out of her brother.

父は私の弟を掌中の玉のようにかわいがった。
chichi wa watashi no otōto o shōchū no tama no yō ni kawaigatta.
My brother was the apple of my father's eye.

彼女の妹は大好きだが、彼女の弟は好きではない。
kanojo no imōto wa daisuki da ga, kanojo no otōto wa suki de wa nai.
Her sister I like very much, but her brother I do not like.

	The Japanese word
	弟
	is pronounced
	otouto \| おとうと
	means
	younger brother {one's own}

	Examples:
	姪とは兄弟の娘を言う。 mei to wa kyōdai no musume o iu. A niece is a daughter of one's brother or sister.
	私の弟はテレビを見ている。 watashi no otōto wa terebi o mi te iru. My little brother is watching TV. \| My brother is watching TV. \| My younger brother is watching TV.
	遠くの兄弟より、良き隣人。 tōku no kyōdai yori, yoki rinjin. A good neighbour is better than a brother far off.
	僕はよく弟と間違えられる。 boku wa yoku otōto to machigae rareru. I am often mistaken for my brother.
	彼女は弟に腹を立てていた。 kanojo wa otōto ni hara o tate te i ta. She was out of temper with her brother.
	弁当を弟に分けてあげなさい。 bentō o otōto ni wake te age nasai. Share your lunch with your brother.
	彼女は優しく弟を抱きしめた。 kanojo wa yasashiku otōto o dakishime ta. She embraced her brother warmly.
	彼女は弟に犬の散歩をさせた。 kanojo wa otōto ni inu no sanpo o sa se ta. She got her brother to walk the dog.
	僕と弟は食物の好みが一緒です。 boku to otōto wa shokumotsu no konomi ga issho desu. My brother and I like the same food.
	妹は３歳年下で弟は４歳年下です。 imōto wa san sai toshishita de otōto wa yon sai toshishita desu. My sister is three years younger than I and my brother is four years younger.
	母は弟に黄色い傘を買ってやった。 haha wa otōto ni kīroi kasa o katte yatta. Mother bought my brother a yellow umbrella. \| My mother bought my little brother a yellow umbrella. \| My mother bought my brother a yellow umbrella.
	彼女は弟の宿題を手伝ってやった。 kanojo wa otōto no jukudai o tetsudatte yatta. She assisted her brother with his homework. \| She helped her younger brother with his homework.
	ども、愚弟がお世話になってるようで。 domo, gutei ga osewa ni natteru yō de. Thanks, I hear you've been taking care of my little brat of a brother.
	僕は弟と一緒の部屋で暮らしています。 boku wa otōto to issho no heya de kurashi te i masu. I share an apartment with my brother.
	母は彼に弟の世話をしなさいといった。 haha wa kare ni otōto no sewa o shi nasai to itta. Mother told him to look after his younger brother.
	母、弟、祖父母と一緒に住んでいます。 haha, otōto, sofubo to issho ni sun de i masu. I live with my mother, brother and my grandparents.
	彼女はうまく弟からその手紙を取り上げた。 kanojo wa umaku otōto kara sono tegami o toriage ta. She coaxed the letter out of her brother.
	父は私の弟を掌中の玉のようにかわいがった。 chichi wa watashi no otōto o shōchū no tama no yō ni kawaigatta. My brother was the apple of my father's eye.
	彼女の妹は大好きだが、彼女の弟は好きではない。 kanojo no imōto wa daisuki da ga, kanojo no otōto wa suki de wa nai. Her sister I like very much, but her brother I do not like.

	Examples sourced from tatoeba.org