- spider crab
- snapping turtle
- supermolecule
- spore sac
- sporangium
- spore case
- spore
- spotting
- sore
- solanaceous vegetable
- stephanotis floribunda
- stael
- sponge cake
- solanum pseudocapsicum
- silver perch
- snake pit
- sanatorium
- sanely
- stony coral
- staghorn coral
- stag's_horn coral
- spanish capital
- Sanskrit
- Sanskritic language
- slick magazine
- sepulchral
- sicily
- sickish
- sick of
- sick as a parrot
- sick leave
- Small Magellanic Cloud
- solomon's seal
- shield of david
- star of david
- supernaturalism
- sensing element
- selenium cell
- slide projector
- sidewalk
- square matrix
- sleight of hand
- seventeen_year locust
- stipendiary
- stipendiary magistrate
- surcoat
- sheepskin coat
- surf fishing
- surface active agent
- Surinamese monetary unit