1. [noun] Someone whose job is to speak for someone's case in a court of law; a counsel. [from 14th c.]
2. [noun] Anyone who argues the case of another; an intercessor. [from 14th c.]
3. [noun] A person who speaks in support of something. [from 18th c.]
4. [noun] A person who supports others to make their voices heard, or ideally for them to speak up for themselves.
5. [verb] (transitive) To plead in favour of; to defend by argument, before a tribunal or the public; to support, vindicate, or recommend publicly.
6. [verb] (transitive) To encourage support for something.
7. [verb] (intransitive) (with for) To engage in advocacy.
8. [noun] A person who pleads for a cause or propounds an idea.
9. [noun] A lawyer who pleads cases in court.
10. [verb] Push for something; 'The travel agent recommended strongly that we not travel on Thanksgiving Day'.
11. [verb] Speak, plead, or argue in favor of; 'The doctor advocated a smoking ban in the entire house'.
