a blind, as for a window, having overlapping horizontal slats that may be opened or closed, especially one in which the slats may be raised and drawn together above the window by pulling a cord.
Origin
1760-70
Related forms
venetianed, adjective
British Dictionary definitions for venetian blind
Venetian blind
noun
1.
a window blind consisting of a number of horizontal slats whose angle may be altered to let in more or less light