Stingsinger was correct in his first post: it's an oxymoron.

Definition of "church" from the OED (unabridged):


noun

a building used for public Christian worship:the church was largely rebuilt at the end of the 15th century some people go to church every Sunday after church we went to a restaurant [in names]:St Luke's Church

•
(Church) a particular Christian organization with its own clergy, buildings, and distinctive doctrines:the Church of England

•
(the Church) the hierarchy of clergy within a particular Christian Church:Isobel would enter the Church as a deacon

•
[mass noun] institutionalized religion as a political or social force:the separation of church and state


verb
[with object] archaic
take (a woman who has recently given birth) to church for a service of thanksgiving.



Origin:

Old English cir(i)ce, cyr(i)ce, related to Dutch kerk and German Kirche, based on medieval Greek kurikon, from Greek kuriakon (dōma) 'Lord's (house)', from kurios 'master or lord'. Compare with kirk