Sentence:  The Round House, a bare, gaunt railway shed designed by Stephenson in 1847, in which engines were once housed and <WSD>turntabled</WSD> (hence its shape and name), was in those days very flexible in its programming and in its seating arrangements; ... 
Meaning of the word marked with <WSD> tags:  To rotate or turn around using, or as if using, a turntable.