極ごく細ぼそ

noun which may take the genitive case particle 'no'

superfine; extra-fine; extremely thin

Describes something very fine or thin, such as fibers, threads, tips, or particles. Often used as a no-adjective in technical or product contexts.

• このペンは極ごく細ぼその線せんが描かけます。

  This pen can draw superfine lines.

• 極ごく細ぼその繊せん維いを使つかった新あたらしい素そ材ざいが開かい発はつされた。

  A new material using extra-fine fibers has been developed.

noun

extra-fine woollen yarn

Specifically refers to a type of very fine wool yarn, often used in knitting or textile contexts. Less common than the general adjectival use.

• このセーターは極ごく細ぼそで編あまれている。

  This sweater is knitted with extra-fine woollen yarn.