1. [adv]  in the direction of the sea; "the sailor looked seaward"
2. [adj]  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"
3. [adj]  (of winds) coming from the sea toward the land; "an inshore breeze"; "an onshore gale"; "seaward winds"

SEAWARD is a 7 letter word that starts with S.

1. \Sea"ward\, a.
   Directed or situated toward the sea. --Donne.
   
         Two still clouds . . . sparkled on their seaward edges
         like a frosted fleece.                   --G. W. Cable.
   
   

2. \Sea"ward\, adv.
   Toward the sea. --Drayton.