Wiktionary
vb. 1 (context nautical English) To haul up; usually, to haul the slack of (a rope) through its leading block, or to haul up (a tackle which hangs loose) by its fall. 2 (context US dated English) To round up (cattle) by riding around them.
Usage examples of "round in".
They could no longer manage their balloon, which went whirling round and round in contending currents, and refused to obey the different dilations of the gas.
And I should have hoved at a well or a ford or something and made all true knights that came that way to joust with me for the honor of their ladies, and I should have spared them all after I had given them a great fall, and I should live out of doors all the year round in a pavilion and never do anything but joust and go on quests and bear away the prize at tournaments, and I shan't ever tell anybody my name.
You lay down the mallet and start to go round and tell him what you think about the whole business, and, at the same time, he starts round in the same direction to come and explain his views to you.
Gudrun looked round in the direction of Hermione's long, pointing finger.
Thinking again of the prisoners, he made sure his Springfield had a round in the chamber and the safety off when he set it beside the sleeping bag.