名詞 hello:

1. an expression of greeting
   同義詞：hullo, hi, howdy, how-do-you-do

1. She actually condescended to say hello to me in the street today.
   她今天在街上竟能屈尊跟我打招呼。
2. I said hello to her, but she ignored me completely!
   我向她打招呼，可她根本不理我！
3. Hello there, what a coincidence!
   你好，真巧??！
4. Say hello to your husband.
   問你的丈夫好。
5. Hello, it's us back again!
   喂，是我們回來了！
6. Hello, it's me.
   喂，是我呀。
7. Teller: Oh! Hello, Mrs. Jerky. How are you today?
   出納：哦！哈羅，哲琪太太，你今天好嗎？
8. Hello? Tony here.
   喂? 我是托尼。

hel.lo

interj.（感嘆詞）
Used to greet someone, answer the telephone, or express surprise.
哈羅，喂：用于表示問候某人、聽電話或是表達(dá)驚訝之情
n.（名詞）
【復(fù)數(shù)】 hel.los
A calling or greeting of .hello..
.喂.的招呼聲或問候聲
v.intr.（不及物動詞）
hel.loed,hel.lo.ing,hel.loes
To call .hello..
喊.喂.

來源：
Alteration of hallo
hallo的變化
alteration of obsolete holla [stop!]
廢語 holla的變化 [停止]
perhaps from Old French hola
可能源自 古法語 hola
ho [ho!]
ho [噢]
la [there] from Latin ill3c [that way]
la [那兒] 源自 拉丁語 ill3c [那樣，那條路]