s. m. (M.), ) A term in ploughing. A field is ploughed in circles of concentric furrows, each furrow being inside the last. When the unploughed piece in the centre becomes so small that the plough cannot turn in it, the plough begins a new set of concentric furrows in a fresh piece of land, bringing back his plough when he has taken a wider sweep to finish the unploughed centre. Each set of concentric furrows is called a chakí and the leaving one set to take up another is Urá.