also: せーまんどーまん
noun
doman-seman amulet
A traditional protective charm historically worn by female ama divers in Shima Province (present-day Mie Prefecture). The term refers to a pair of symbols (a grid and a star) believed to ward off sharks and other dangers.
海女さんたちは、ドーマンセーマンのお守りを身につけて海に潜った。
The female divers wore doman-seman amulets when they dove into the sea.
志摩地方では、今でもドーマンセーマンを魔除けとして使うことがある。
In the Shima region, doman-seman is still sometimes used as a protective charm.