roachedPronunciation: /rəʊtʃt/Definition of roached adjective US 1(of an animal’s back) having an upward curve: the dogs sprang forward with their backs roached 2(of a person’s hair) brushed upwards or forwards into a roll: he had hair roached down to cover his baldness (of a horse’s mane) clipped or trimmed short so that the hair stands on end: a big horse with a roached maneroached in other Oxford dictionaries Definition of roached in the US English dictionary