praestruo

prae-struō ūxī, ūctus, ere,

to build before, block, stop up, make impassable, make inaccessible: aditum obice montis, O.: Porta Fonte fuit praestructa, stopped up, O.: Hospitis effugio omnia, against the escape, O.—Fig.: fraus fidem in parvis sibi praestruit, seeks to win confidence beforehand, L.