名詞 caller:

1. a social or business visitor
   同義詞：company
2. an investor who buys a call option
3. the bettor in a card game who matches the bet and calls for a show of hands
4. a person who announces the changes of steps during a dance
   同義詞：caller-out
5. someone who proclaims or summons in a loud voice
6. the person who convenes a meeting
7. the person initiating a telephone call
   同義詞：caller-up, phoner, telephoner

形容詞 caller:

1. providing coolness
2. fresh

1. The telephonist asked the caller to hold on while she connected him.
   話務(wù)員要打電話的人別掛斷電話，她替他接通電話。
2. The caller asked for a meeting with our leader.
   訪客要求見(jiàn)我們的領(lǐng)導(dǎo)。
3. I'm sorry, caller, their telephone seems to be broken.
   對(duì)不起，對(duì)方的電話好象壞了。
4. The priest is a regular caller.
   這位神父經(jīng)常來(lái)訪。

caller

n.（名詞）
One that calls, especially a party placing a telephone call.
打電話者：打電話的人，尤指在裝有電話的晚會(huì)上
A person paying a short social visit.
來(lái)訪者：進(jìn)行短時(shí)社交拜訪的人
A person who calls out numbers or directions, as at a bingo game or a square dance.
呼喚者，召集者：叫出數(shù)字或方向的人，如在賓果游戲中或在方步舞中

caller
caller 2

adj.Scots （形容詞）【蘇格蘭】
Fresh.
新鮮的
Cool and refreshing.
冷鮮的：冷凍的和新鮮的

來(lái)源：
Middle English calour
中古英語(yǔ) calour
alteration of calver
calver的變化