coarsener

That which makes coarse.

日本語の意味

粗くするもの、粗化装置。何かを粗くする作用を持つもの

The craftsman used a pumice stone as a coarsener to roughen the clay so the glaze would adhere better.

職人は軽石を粗化剤として使い、釉薬がよく付くように粘土を粗くした。

意味（1）

That which makes coarse.

MTV, you pornographer, you segregationist, you imperialist, you coarsener of culture, you aborter of attention spans.

coarseners

（ plural ）