- sleigh bell
- steel drum
- speaking trumpet
- shin up
- shin down
- supplemental air
- subjunction
- swarm down
- swarm up
- stable companion
- sneak current
- subdivide
- subdivision ascomycota
- shut in personality
- slip friction clutch
- slip knot
- shut eyes to
- Saint Martin's summer
- silver age
- shelf life
- semester
- spirit gum
- sponge off
- sponge down
- supply closet
- stock symbol
- symboint control
- symbol of an indian woman's happy state of enjoying coverture (husband's protection)
- symbolic representation
- soft tree fern
- scar tissue
- strike out for
- strike oil
- snatch block
- swoop up
- sequential transducer
- seckel pear
- sequesterectomy
- smokeless
- swimmer's itch
- state socialism
- state capitalism
- spinning
- scale preparation
- spiculum
- spico_thalamic process
- sharp or acute pain (esp. in the stomach)
- scaler
- scaley
- scheduled area