TOEFL eggshell Definition The hard, fragile outer layer of a bird's egg. Example "She carefully removed the eggshell after boiling the egg." Sign in to save TOEFL PDF — $25 ← effusive ego → Study tips featuring "eggshell" TOEFL Academic Vocabulary: Study by Topic Related words TOEFL brighten GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate GRE abduct SAT abet GRE abhor GRE abide SAT abject TOEFL ablaze