*sillet, n.m., nut (of stringed instruments).
*sillomètre, n.m., (nav.) sillometer, log.
*sillon, n.m., (agri.) furrow, ridge; trench, drill; track, trail (of light); wake (of ships); (anat.) groove; wrinkle; (poet.) pl., fields, plains.
*sillonner, v.a., to furrow, to plow, to ridge, to cut; to streak, to flash through, to glint; (anat.) to groove.
silo, n.m., pit (for preserving grain).
silouette, n.f. V. silhouette.
silphium (-fiom), n.m., (n.p.) silphium, laser.
silure, n.m., (ich.) silurus, silure.
silurien, -ne (ri-īn, -è-n), adj., (geol.) silurian.
silves, n.f.pl. V. sylves.