How does Odysseus hurt cyclops?

He had taken an enormous piece of timber was laying near Polyphemus' pen for his goats or something, he cut off a good piece and he and his men sharpened it to a hardened point by turning it round and round in the fire, when they had finished they had hidden it, by the time Polyphemus came back. There followed the same horrible feast as before. when it was over Odysseus filled a cup with his own wine that he had brought with him and offered it to Polyphemus. he emptied it with delight and wanted more, and Odysseus obliged him, when he finally fell into a drunken sleep Odysseus put the wood spear into a fire and headed the point and shoved it into Polyphemus' eye blinding him