Hard White Casing of an Eyeball
This page is the CodyCross answer for the clue below from African grasslands, Group 1541, Puzzle 4 (Baobab Trees).
Question is: Hard White Casing of an Eyeball
and the answer is: SCLERA
Word Meaning:
SCLERA — (anatomy) The white of the eye; the tough outer coat of the eye that covers the eyeball except for the cornea.
Definitions from Wiktionary.