An Etymological Dictionary of the German Language/seichen

by Friedrich Kluge

seichen, vb., ‘to make water,’ from the equiv. MidHG. seichen, OHG. seihhen; allied to ModHG. Seiche, ‘urine,’ and the equiv. MidHG. seiche, f., seich, m., OHG. seih, m.; Goth. *saiqjan, ‘to make water,’ is wanting; with these sickern, ‘to ooze,’ and LG. sêken, ‘to make water’ (Teut. root saik, saiq), are connected. The Aryan root sī̆q, mentioned under seihen, appears in OSlov. as sĭcati, with the same meaning, ‘to make water’; comp. OSlov. sĭcĭ, m., ‘urine.’