This is the 197th most frequent Ukrainian word.
тис
"Тис" in Ukrainian means "yew," which is a type of coniferous tree or shrub.
The word 'тис' is used here to mean 'pressure.'
Сильний тис на двері змусив їх відкритися.
Strong pressure on the door caused it to open.
The word 'тис' here refers to 'yew,' a type of tree or bush.
Тіс, як кущ, надав тіні від спеки.
The yew, as a bush, provided shade from the heat.
In this context, 'тис' is used as an imperative form of the verb 'тиснути,' meaning 'press' or 'push.'