森しん森しん

taru-adjective, adverb taking the 'to' particle

densely wooded; deeply forested

Literary or poetic description of a place thick with trees; often used with と (e.g., 森森と茂る).

• 山やまは森しん森しんと木きが茂しげっていた。

  The mountain was thickly wooded with trees.