sierpe, f., snake, serpent.
siesta, f., siesta, afternoon nap;
dormir la —, to take a nap.
siete, adj. num., seven.
sifón, m., underground conduit, [20], 18.
siglo, m., century; age.
significar, v. a., to signify, to mean.
siguiente, adj., following.
silbar, v. n., to hiss, [106], 20.
silencio, m., silence.
silencioso, sa, adj., silent.