Is anyone familiar with this term?
From wikipedia:
An haz $F$ over a topological space $X$ gives for each open subset $U\subseteq X$ a set $F(U)$ with a "richer" structure $[\cdots]$.
Haces are used in topology, algebraic geometry and differencial geometry, whenever we want to retain the algebraic information that varies with each open set of the given geometrical object.
Keep in mind I translated those bits as correctly as I could.
Thanks.
Haz = Sheaf.
Fibrado = Bundle (as in “fibrado vectorial”, vector bundle).
YoTengoUnLCD = IHaveAnLCD.