The Collaborative International Dictionary
Sea poppy
Sea poppy \Sea" pop"py\ (Bot.) The horn poppy. See under Horn.
Wiktionary
sea poppy
n. The horned poppy (''Glaucium'').
WordNet
sea poppy
n. yellow-flowered Eurasian glaucous herb naturalized in along sandy shores in eastern North America [syn: horn poppy, horned poppy, yellow horned poppy, Glaucium flavum]