Sentence:  "<WSD>Take a knee</WSD>, <WSD>take a knee</WSD>," he said as each group came to him. Brennan knelt to Bonow's right. He plucked a few blades of grass and sucked them, tasting dirt and fertilizer and lime. 
Meaning of the word marked with <WSD> tags:  To come to rest, usually briefly, with one of one's knees on the ground.