Encara no tenim significats per a "bow shallowly".
1Traveller bowed shallowly to the man who continued to watch, motionless.
2The devil scowled for a moment, then bowed shallowly.
3But if you wish to research such things, the index is all you need. He bowed shallowly.
4The Warleader bowed shallowly and departed.