Letterora

Crossword clue: the external hard or firm covering of many invertebrate animals.

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

test 4 letters web-def

put to the test, as for its quality, or give experimental use to

testa 5 letters web-def

protective outer layer of seeds of flowering plants

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Related clues

To make a testament, or will.trying something to find out about itprotective outer layer of seeds of flowering plants