Fly in the ointment refers to something in the forecast that is making the forecast more difficult, or more uncertain. The atmosphere is incredibly complex, and it doesn’t take much sometimes to ...

The Book of Ecclesiastes says “dead flies cause the ointment to send forth a stink.” That’s the origin of the expression a ...

The only fly in her ointment is that her revision must involve renaming D. melanogaster. Andrew Polaszek, a researcher in the entomology department at London's Natural History Museum and a former ...