to guard / to protect / to defend / abbr. for 衛生|卫生, hygiene / health / abbr. for 衛生間|卫生间, toilet / surname Wei / vassal state during the Zhou Dynasty (1066-221 BC), located in present day Henan and Hebei Provinces
to launch a satellite / (fig.) (neologism during the Great Leap Forward, c. 1958) to achieve prominent success / (later used sarcastically) to make exaggerated claims / to talk big