Situated or lying in or towards the east; eastward. / (meteorology) Blowing (as wind) from the east. / Of or pertaining to the east; eastern. / From the East; oriental.

plural of tetrahexahedron

(criminology, historical) Related to or involving the Bertillon system of anthropometry. / Pertaining to signs or signifiers.

(literally) The construction of castles. / (figuratively) Daydreaming.