IPA: /ˈkɔːrsli/
KK: /ˈkɔrsli/
In a rough or unrefined way, often referring to texture or quality.
The sand was coarsely ground, making it perfect for the construction project.
Coarsely → It is formed from "coarse" (from Old French *cors*, meaning rough or crude) and "-ly" (meaning in a manner of). The word "coarsely" means in a rough or crude manner.
Think of something being done in a 'rough' way ('coarse') — the '-ly' just means in that manner. This helps you remember that 'coarsely' describes how something is done roughly.