sill

n.基石；门槛；窗台

Sikh, silage, silence, silencer, silent, silent film, silently, silhouette, silica, silicate, silicon, silicon chip, silicone, silicosis, silk, silk-screen printing, silken, silkiness, silkworm, silky, sillabub, silliness, silly, silly (also silly-billy), silo, silt, silty, silvan (also sylvan), silver, silver birch, silver jubilee, silver paper, silver plate, silver wedding, silver-fish, silver-plated, silver-tongued, silver-ware, silverside, silversmith,