eggshellful means the amount contained in an eggshell. Lexicurio rates it Sui generis — a strength score of 86 out of 100.
Etymology
From Middle English egschelfull, egge schellefull, egge schelle ful, equivalent to eggshell + -ful.
noun
- The amount contained in an eggshell“Beat the white of one egg until stiff, add 1/2 of an eggshellful of cream and beat together well, add enough pulverized sugar to harden it so as to form in squares lay on pasteboard to harden.”