A weather vane, sometimes in the form of a cockerel. / (figuratively) One who veers with every change of current opinion; a fickle, inconstant person.

Alternative form of cocamidopropylbetaine.

simple past tense and past participle of atroke

(UK, informal) A film assigned an age rating of 15, those under 15 not being permitted to view it. / (bibliography, informal) A book printed in the 15th century.