pet

1. (n) An animal kept as a companion or otherwise for pleasure, rather than for some practical benefit or use. 2. (n) (by extension) Something kept as a companion, including inanimate objects (pet rock, pet plant, etc.). 3. (n) Any person or animal especially cherished and indulged; a darling. 4. (v) (transitive) To stroke or fondle (an animal). 5. (v) (transitive, intransitive, informal) To stroke or fondle (another person) amorously. 6. (n) One who is excessively loyal to a superior and receives preferential treatment. 7. (adj) (figurative) Favourite; cherished; the focus of one's (usually positive) attention. 8. (n) A fit of petulance, a sulk, arising from the impression that one has been offended or slighted. 9. (v) To be petulant or upset; to have a problem with. 10. (n) (Ireland, Geordie) A term of endearment usually applied to women and children. 11. (adj) (literally) Kept or treated as a pet. 12. (v) (dated, transitive) To treat as a pet; to fondle; to indulge. 13. (v) (archaic, intransitive) To be a pet. 14. (v) (archaic, intransitive) To be peevish; to sulk. 15. (adj) (obsolete) Good; ideal. 16. (n) Abbreviation of petition. [A formal written request made by an individual or a group of people to a sovereign or political authority, often containing many signatures, soliciting some grace, right, mercy, or the redress of some wrong or grievance.] 17. (n) (uncountable, organic chemistry) Initialism of polyethylene terephthalate. [(organic chemistry) A thermoplastic resin of the polyester family used particularly in the manufacture of plastic bottles (PET) and fabrics (Terylene).] 18. (n) (countable and uncountable, medicine) Acronym of positron emission tomography. [(medicine) A medical imaging technique which detects the gamma rays produced by positrons emitted from injected radionuclides.] 19. (n) (countable, genetics) Acronym of paired-end tag. [(genetics) Any of the short sequences, at the 5′ and 3′ ends of a DNA fragment, that are sufficiently unique (theoretically) so as to exist together only once in a genome, therefore making the sequence of the DNA in between them available upon search.] 20. (n) (countable, historical, computing, backronym) Acronym of personal electronic transactor, a line of personal computers produced by Commodore International. 21. (n) (medicine) Initialism of perineal ectopic testis (a rare congenital anomaly of the testis). 22. (n) (Canadian politics) Initialism of Pierre Elliott Trudeau.