1 (biology) a pore in the outer layer of a plant leaf or stem that allows gases to go in and out.
az: məsamə
ru: устьице
2 (biology) a mouth-like opening in some animals.
az: ağız
ru: устье
3 (medical) an artificial opening made in a body organ such as the colon or trachea.
az: anastomoz deşik
ru: cтома; отверстие анастомоза