B1
to not have enough of something
Dictionary examples:
I'm short of excuses, so I'll just say my dog ate my homework! (0.0)
I'm so short of cash, I'm considering selling my pet rock collection! (0.0)
I'm short of sleep, so excuse me if I start snoring during our conversation! (0.0)
to be short of space/time (11.1)
She ran a little farther and then stopped, feeling short of breath. (26.7)