shield; buckler; escutcheon; pretext
to defy; to disobey; to rebel against; to oppose; to resist
to barricade oneself in; to hold (a fort, etc.); to shut oneself up; to be besieged; to dig in
shutting oneself in (one's room, etc.); barricading oneself in (a fort, etc.) while being besieged; holing up (in a building)
look at both sides of the thing; (lit.) look at both sides of the shield
Canadian Shield; Laurentian Shield; Laurentian Plateau
the humble shield of our Sovereign Lord