4.PronounUsed to refer to a previously mentioned person or people."That is the woman whom I spoke to earlier. (defining); Mr Smith, whom we all know well, will be giving the speech. (non-defining); He's a person with whom I work (defining); We have ten employees, half of whom are carpenters. (non-defining); There is a new girl in the class whom I consider to be a wunderkind.; She felt miserable unless she had neighbors with whom to quarrel regularly."