turnbroach, turn broacher

[Fr. tourne- one's turn or promoting private interest. IMG:content-1574.png:[blocks in formation] 1. Railway Eng .: A platform which rotates in a horizontal plane, and is used for shifting rolling stock from one line of rails to another. Devices common to all are the platform, which has one or more tracks of rails on its upper surface; rollers on which it turns, gearing for rotating it, a central pivot on which it rotates, a circular track on which the rollers move, and solid foundations for this track and for the central pivot. One common form consists of a platform centrally supported on a 1. Build .: A turning chimney-top or cowl, always series of frusto-conical rollers turning on arms rad i presenting its mouth to leeward. 2. Bot .: Lilium martagon .