petroleum fly
noun
A North American shore fly, Psilopa petrolei (family Ephydridae), whose larvae live in natural oil pools, feeding on bacteria and detritus.
Origin
Early 20th century.
- leaf monkey
- leaf mould
- leaf node
- leaf-nosed bat
- leaf peeper
- leaf peeping
- leaf roll
- leaf roller
- leaf shutter
- leaf spot
- leaf spring
- leafstalk
- leaf-tailed gecko
- leaf trace
- leaf vegetable
- leaf warbler
- leafy
- leafy spurge
- league
- league football
- League of Arab States
- League of Nations
- League of Nations mandate
- League of Nations Society
- League of Nations Union