в стенах — within the precincts (of)
как об стену горох — pointless, useless
лезть на стену — to climb up the wall; to be beside oneself; to go into a frenzy
припереть кого-л. к стене, прижать кого-л. стене — to drive smb. into a corner, to back smb. against the wall
вставать стеной, стоять стеной — to make a stand for smb., to give one's full support to smb.; to take a firm stand, to stand one's ground