callerKK [ˋkɔlɚ] /ˈkɔlɚ/名詞1來電者、打電話的人The caller hung up before I could ask his name.我還來不及問對方的名字,來電者就掛斷了。2訪客、來客稍舊式She had an unexpected caller at the door this morning.今天早上有位不速之客上門拜訪。3唱名者、報號員The caller read out the winning numbers one by one.報號員一個一個唸出中獎號碼。