Verb
round upon (third-person singular simple present rounds upon, present participle rounding upon, simple past and past participle rounded upon)
To turn and attack a potential attacker
Our cause is never more in danger than when a human, no longer desiring, but still intending to do our Enemy's will, looks round upon a universe from which every trace of Him seems to have vanished, and asks why he has been forsaken, and still obeys. C. S. Lewis
Look round and round upon this bare bleak plain, and see even here, upon a winter's day, how beautiful the shadows are Alas it is the nature of their kind to be so. The loveliest things in life, Tom, are but shadows and they come and go, and change and fade away, as rapidly as these. Charles Dickens