gall wasp
US /ˈɡɔːl wɑːsp/
UK /ˈɡɔːl wɑːsp/
1.
a small wasp that lays its eggs in plants, causing galls to form
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The oak tree was covered in galls caused by gall wasps.
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Scientists are studying the life cycle of the gall wasp.
a small wasp that lays its eggs in plants, causing galls to form