1. Regency glazing-bar with a section of two long ogees separated by a fillet, very fine and deep compared with its width.
2. Tapering tongue-like end to a stair handrail rising in a concave curve and joining the handrail in a convex sweep.
"lamb's tongue." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (August 21, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/lambs-tongue
"lamb's tongue." A Dictionary of Architecture and Landscape Architecture. . Retrieved August 21, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/lambs-tongue