marshwort 
noun
A white-flowered plant of the parsley family which grows beside streams and in boggy areas.
- Genus Apium, family Umbelliferae: several species.
- Marshwort is a bottom-rooted perennial water lily-like plant.
- As its name suggests, creeping marshwort is a low-growing plant. The leaves are toothed with a single large cleft, and the plant sends out runners which creep low to the ground or slightly below the surface.
- schtum
- schtup
- Schubert, Franz
- Schubertian
- Schulz, Charles
- Schumacher, E. F.
- Schumacher, Michael
- Schumann, Robert
- schuss
- Schuylkill River
- schvitz
- schwa
- Schwaben
- schwag
- Schwann, Theodor
- Schwarzenegger, Arnold
- Schwarzkopf, Dame Elisabeth
- Schwarzkopf, H. Norman
- Schwarzschild black hole
- Schwarzwald
- Schweinfurt
- Schweitzer, Albert
- Schweiz
- Schwerin
- Schwyz