to startle / to be frightened / to be scared / alarm
惊
=
京
+
忄
:
Somebody set off engine's alarm in the middle of the night and Joan of Arc arrives in a rush to scare away any intruder with a flail. She was in such a rush and so tired though that she forgot to put on her pants and arrives in front of the engine just wearing ridiculous underpants which feature a pattern of berets, mandarins and daisies.