This is the 426th most frequent Hebrew word.
סמוך
Adjacent, near, or close.
The word "סמוך" is used here as an adjective, meaning "adjacent" or "nearby."
הבית שלנו סמוך לגן הציבורי.
Our house is adjacent to the public garden.
In this context, "סמוך" has a figurative meaning, describing reliance or dependency.
הוא סמוך על שולחן הוריו.
He is dependent on his parents' table.
Here, "סמוך ובטוח" is a fixed phrase meaning "rest assured," showing confidence in a statement.