flyspeck
/ˈflaɪˌspɛk/Definitions
1. noun
A small speck or spot, typically on the surface of something, especially a fly’s droppings.
“The car’s paint job was marred by a tiny flyspeck on the hood.”
2. verb
To mark or stain something with a fly’s droppings.
“The flyspecked paint job was a result of the careless worker.”