top-shell
top-shell
n
(Animals) any marine gastropod mollusc of the mainly tropical Old World family Trochidae, having a typically brightly coloured top-shaped or conical shell
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014