Belgium
latte
Meaning
a ruler
Elsewhere
règle
Explanation
Elsewhere a latte is a lath, a thin strip of wood. In Belgium and Lorraine it is also the ruler in your pencil case, what France calls a règle.
Example
Passe-moi ta latte, je dois tirer un trait bien droit.
Pass me your ruler, I need to draw a straight line.
Origin
From the late Latin latta, of Germanic origin, related to the English lath and German Latte.
Where
Belgium
Lorraine
Source