1. (n.) The block in the center of a wheel, from which the spokes radiate, and through which the axle passes; -- called also hub or hob.

2. (n.) The navel.

3. (n.) The middle or body of a church, extending from the transepts to the principal entrances, or, if there are no transepts, from the choir to the principal entrance, but not including the aisles.

Easter sepulcher ambry apse arbor axis axle axle bar axle shaft axle spindle axle-tree baptistery blindstory center center of action center of gravity centroid centrum chancel choir cloisters confessional confessionary core crypt dead center diaconicon diaconicum distaff epicenter fulcrum gimbal gudgeon heart hinge hingle hub kernel mandrel marrow medulla metacenter middle navel nub nucleus oarlock omphalos pin pintle pith pivot pole porch presbytery radiant rood loft rood stair rood tower rowlock sacrarium sacristy spindle storm center swivel transept triforium trunnion umbilicus vestry