grease ant
US /ˈɡriːs ænt/
UK /ˈɡriːs ænt/

1.
a small, dark brown ant (Monomorium minimum) that is attracted to greasy foods and often found in kitchens and pantries
:
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We found a trail of grease ants leading to the spilled sugar.
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Grease ants are a common pest in many households.