Noun has 1 sense

• seaward(n = noun.linkdef) - the direction toward the sea;

Adjective has 3 senses

• seaward(a = adj.all) offshore - (of winds) coming from the land; "offshore winds"
• seaward(a = adj.all) inshore, onshore, shoreward - (of winds) coming from the sea toward the land; "an inshore breeze"; "an onshore gale"; "sheltered from seaward winds"
• seaward(s = adj.all) - directed or situated away from inland regions and toward the sea or coast; "from the hill he took a seaward course"; "on the seaward side of the road"

Adverbial has 1 sense

• seaward(r = adv.all) asea, seawards - in the direction of the sea; "the sailor looked seaward"