subject /ˈsʌbdʒɪkt/ noun [C]
WHAT › what someone is writing or talking about: a series of programmes on the subject of homelessness
STUDY › an area of knowledge studied in school or university: Chemistry is my favourite subject.
GRAMMAR › the person or thing which performs the action described by the verb. In the sentence 'Bob phoned me yesterday.', 'Bob' is the subject.
PERSON › someone who is from a particular country, especially a country with a king or queen: a British subject