Definitions

1. noun

a large sea star, especially one of the genus Astropecten, typically with a broad, flat body and long arms, found in tropical waters.

“The snorkeler carefully lifted the seastar to avoid injuring it.”

2. noun

a sea star, especially one of the genus Patiriella.

“The seastar was carefully placed back into its habitat after being studied.”

3. noun

any starfish.

“The seastar was a popular attraction at the aquarium.”