- sphinecter mechanism
- shutter
- scrawny
- spaghetti squash
- silastic implant
- show window
- snaffle
- snap to it
- suspension frame
- suspension system
- sigmoid flexure
- sigmoid colon
- short_stop
- short_stop bath
- semicircular section
- solidus
- spirant
- statoreception
- stop round
- shifter
- shift_in character
- sprinkler controller
- stop code
- stokehole
- stomp
- stomoxys calcitrans
- squish
- sun bathing
- sea bathing
- subband samples
- subcaecal position
- service fee
- service ceiling
- shining clubmoss
- service firm
- shiny
- solvellae
- stake out claim
- squared_toe
- square_toed
- strait of ormuz
- self important
- schizothymic temprament
- schlatters disease
- schizolysigenous gland
- sanitary well
- salt flat
- saskatchewan
- soft solder
- sidle