This is the 644th most frequent Hebrew word.
לבני
The Hebrew word "לבני" can mean "my bricks" or "to/for my son(s)" depending on context.
Here, 'לבני' is used as a proper noun, a name of a person, showing ownership or association.
הלבני הכין את המחקר בצורה מרשימה.
The lemony (the person named Lebeni) prepared the study impressively.
In this sentence, 'לבני' refers to bricks (plural form), implying their purpose in the activity.
הילדים שיחקו עם לבני הפלסטיק.
The children played with the plastic bricks.
Here, 'לבני' refers to fuel cells (an engineering/material context).