This is the 16981st most frequent Russian word.
сосут
"Сосут" translates to "suck" (third person plural, present tense) in English.
The verb 'сосут' is used in the literal sense of drawing something into the mouth by creating a vacuum.
Дети сосут леденцы.
The children are sucking on lollipops.
The verb 'сосут' is used metaphorically to describe drawing or absorbing moisture.
Цветы сосут влагу из почвы.
The flowers are absorbing moisture from the soil.
The verb 'сосут' is used colloquially in a negative expression to mean 'is bad'.