Definition of sea moss:
(n) :
Certain red algae, such as:
(n) :
Chondrus crispus (Irish moss, carrageen moss)
(n) :
Endocladia muricata (turfweed, nailbrush seaweed)
(n) :
Kappaphycus alvarezii (elkhorn sea moss)
(n) :
Palmaria palmata (dulse)
(n) :
Any marine organism resembling moss