flyspeck

UK: /ˈflaɪˌspɛk/ US: (flī′spek′)

WordReference Random House Unabridged Dictionary of American English © 2025

fly•speck  (flī′spek′), n. 

1. a speck or tiny stain from the excrement of a fly.
2. any minute spot.
3. Plant Diseases a disease of pome fruits, characterized by small, raised, dark spots on the fruit, caused by a fungus, Leptothyrium pomi.

v.t. 

4. to mark with flyspecks.

• fly² + speck 1850–55

Collins Concise English Dictionary © HarperCollins Publishers::

flyspeck / ˈflaɪˌspɛk/ noun

1. the small speck of the excrement of a fly
2. a small spot or speck

verb

1. (transitive) to mark with flyspecks