一環, いっかんlink (e.g. in a chain of events), part (of a plan, campaign, activities, etc.), , monocyclic

Common

1. Noun

   1. 1.

      link (e.g. in a chain of events), part (of a plan, campaign, activities, etc.)

2. の-adjective

   1. 2.

      monocyclic

      Botany