English This entry needs a photograph or drawing for illustration. Please try to find a suitable image on Wikimedia Commons or upload one there yourself! Alternative forms top shell Etymology From top + shell. Noun topshell (plural topshells) A shell shaped like a toy top, found principally in the family Trochidae of marine gastropod mollusks or top snails. A snail with such a shell Anagrams hot spell Remove adsWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads