obstruir

v. obstruct, block; interfere; hinder, impede; thwart; prevent from seeing; foul

v. filibuster, blockade, beset; block, jam; obstruct, occlude; shut; let

= clog up, obstruct.
Ex: It is wise to fan the paper to separate the sheets and let air in between them, otherwise several sheets might stick together and clog up the printer.
Ex: But the present revision, incorporating ISBD, will literally clutter the entries with obtrusive redundancies and esoterics that will only obscure the content of the entries and obstruct the use of the catalog.