防線

防 = 方 + 阝 : Frankenstein's Monster accepted to work as the Pope's bodyguard inside the anglepod's kitchen. He protects the Pope by having him stay inside a protective square.

线 = 戋 + 纟 : Mnemonic symbol: barbed wire.

线 = 戋 + 纟 : The silk worm wants to use the floating tank in the anthill's bathroom, but there's already Marie Curie inside—and she secured the tank by setting up barbed wire all around it.