giant cockroach
US /ˈdʒaɪ.ənt ˈkɑːk.roʊtʃ/
UK /ˈdʒaɪ.ənt ˈkɑːk.roʊtʃ/

1.
a very large species of cockroach, often found in tropical and subtropical regions, known for its size and rapid movement
:
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I screamed when I saw a giant cockroach scuttling across the kitchen floor.
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In some tropical countries, giant cockroaches are a common sight.