- small tambourine —a percussion musical instrument
- shortgrass
- shorthand
- stenographical
- stenomeric
- silent treatment
- soundlessly
- sense perception
- sense winding
- sickle cell thalassaemia disease
- sickle knife
- shadows to be cast
- seamlessly
- sedge warbler
- sedge wren
- snore
- snorer
- saw log
- susquehanna
- suspire
- stock_take
- soph
- suck up
- sop up
- soap_rock
- soapstone
- skip
- skintight
- skip it
- skip sequential access method
- skip jumpd
- skip flag
- skip area
- stale food
- stale
- stalagmite
- subtotal pancreatectomy
- strive
- settle down
- settle an score
- salmonella paratyphi c.
- salmonella paratyphi b.
- salmonella paratyphi
- symbolical
- sle
- suppressive
- saurischian dinosaur
- strong_arm
- saurischian
- scaphopod