From Wiktionary, the free dictionary
sagpák (Baybayin spelling ᜐᜄ᜔ᜉᜃ᜔)
- falling flat with one's abdomen on the water surface (in a swimming pool, river, etc.)
- Synonyms: tagupak, lagapak
- noise of breaking waves hitting the beach (especially during a storm)
- Synonyms: salwak, alawak