wax (plural waxes) (dated, colloquial) An outburst of anger, a loss of temper, a fit of rage. father Arnall's face looked very black but he was not in a wax: he was laughing. ‘That's him to a T,’ she would murmur; or, ‘Just wait till he reads this’; or, ‘Ah, won't that put him in a wax!’