Athenian cultural dominance continued throughout the Roman period, and the buildings added to the Agora reflect the educational role of the city, a role that ended only with the closing of the pagan philosophical schools by the Christian emperor Justinian in A.D. 529.
Bearing, in machine construction, a connector (usually a support) that permits the connected members to rotate or to move in a straight line relative to one another. Often one of the members is fixed, and the bearing acts as a support for the moving member. Most bearings support rotating shafts against either transverse (radial) or thrust (axial) loads.
1 A machine for turning, that is, for shaping articles of wood, metal, or other material, by causing them to revolve while acted upon by a cutting tool.  n. The movable swing frame of a loom, carrying the reed for separating the warp threads and beating up the weft; -- called also lay and batten.