ETYM Old Eng. ussher, uschere, Old Fren. ussier, uisser, oissier, hussier, huissier, from Latin ostiarius a doorkeeper, from ostium a door, entrance, from os mouth. Related to Oral, Ostiary.
1. An official doorkeeper as in a courtroom or legislative chamber; SYN. doorkeeper.
2. Someone employed to conduct others; SYN. guide.