Dictionary
sea pen
noun
Definition of SEA PEN
: any of numerous anthozoans (order Pennatulacea) growing in colonies with a feathery form
ADVERTISEMENT
First Known Use of SEA PEN
1763
Learn More About SEA PEN
Browse
ADVERTISEMENT
Seen & Heard
What made you want to look up sea pen? Please tell us where you read or heard it (including the quote, if possible).