grail /ɡɹeɪl/ noun5 •The Holy Grail.The quest for the Grail is not archeology. It's a race against evil. If it is captured by the Nazis, the armies of darkness will march all over the face of the earth. Do you understand me? — 1989 •Something eagerly sought or quested for.Becoming an astronaut was his grail. •A book of offices in the Roman Catholic Church; a gradual.antiphonals, missals, grails, processionals, etc. — 1694 •One of the small feathers of a hawk. •(literary) Small particles of earth; gravel.Hereof this gentle knight vnweeting was, / And lying downe vpon the sandie graile, / Drunke of the streame, as cleare as cristall glas [...]. — 1590 formsgrails