Strong's #4074: Petros (pronounced pet'-ros)
 apparently a primary word; a (piece of) rock (larger than 3037); as a name, Petrus, an apostle:--Peter, rock. Compare 2786.
Thayer's Greek Lexicon:
 ́ 
 
  Petros 
 
 Peter = "a rock or a stone" 
 1) one of the twelve disciples of Jesus
 
  Part of Speech: noun proper masculine
Relation: apparently a primary word
  Citing in TDNT: 6:100, 835
 
Usage:
This word is used 162 times:
Acts 2:37: "and said unto  Peter and to the rest of the apostles,"
Acts 2:38: "Then  Peter said unto them, Repent, and be baptized"
Acts 3:1: "Now  Peter and John went up together into"
Acts 3:3: "Who seeing  Peter and John about to go into"
Acts 3:4: "And  Peter, fastening his eyes upon him with John, said,"
Acts 3:6: "Then  Peter said, Silver and gold have I"
Acts 3:11: "lame man which was healed held  Peter and John, all the"
Acts 3:12: "And  when Peter saw it, he answered unto the people, Ye men"
Acts 4:8: "Then  Peter, filled with the Holy Ghost, said unto them,"
Acts 4:13: "when they saw the boldness  of Peter and John, and perceived"
Acts 4:19: "But  Peter and John answered and said unto them,"
Acts 5:3: "But  Peter said, Ananias, why hath Satan filled thine"
Acts 5:8: "And  Peter answered unto her, Tell me whether ye sold"
Acts 5:9: "Then  Peter said unto her, How is it that ye"
Acts 5:15: "at the least the shadow  of Peter passing by might overshadow some of them."
Acts 5:29: "Then  Peter and the other apostles answered and said, We ought"
Acts 8:14: "they sent unto them  Peter and John:"
Acts 8:20: "But  Peter said unto him, Thy money perish"
Acts 9:32: "And it came to pass,  as Peter passed throughout all quarters, he came down also"
Acts 9:34: "And  Peter said unto him, Aeneas Jesus Christ maketh thee whole:"
Acts 9:38: "disciples had heard that  Peter was there, they sent"
Acts 9:39: "Then  Peter arose and went with them. When he was come, they brought"
Acts 9:40: "But  Peter put them all forth, and kneeled down, and prayed;"
Acts 9:40: "her eyes: and when she saw  Peter, she sat up."
Acts 10:5: "one Simon, whose surname is  Peter:"
Acts 10:9: "drew nigh unto the city,  Peter went up upon the housetop"
Acts 10:13: "to him, Rise,  Peter; kill, and eat."
Acts 10:14: "But  Peter said, Not so, Lord; for I have never eaten"
Acts 10:17: "Now while  Peter doubted in himself what this vision"
Acts 10:18: "whether Simon, which was surnamed  Peter, were lodged there."
Acts 10:19: "While  Peter thought on the vision, the Spirit"
Acts 10:21: "Then  Peter went down to the men which were sent unto"
Acts 10:23: "and lodged them. And on the morrow  Peter went away with them,"
Acts 10:25: "And as  Peter was coming in, Cornelius met him,"
Acts 10:26: "But  Peter took him up, saying, Stand up; I myself also"
Acts 10:32: "Simon, whose surname is  Peter; he is lodged in the house"
Acts 10:34: "Then  Peter opened his mouth, and said, Of a truth I perceive"
Acts 10:44: " While Peter yet spake these words, the Holy Ghost"
Acts 10:45: "they of the circumcision which believed were astonished, as many as came with  Peter, because that on"
Acts 10:46: "God. Then answered  Peter,"
Acts 11:2: "And when  Peter was come up to Jerusalem, they that were of"
Acts 11:4: "But  Peter rehearsed the matter from the beginning, and expounded it by order unto them, saying,"
Acts 11:7: "saying unto me, Arise,  Peter; slay and eat."
Acts 11:13: "call for Simon, whose surname is  Peter;"
Acts 12:3: "the Jews, he proceeded further to take  Peter also. (Then were"
Acts 12:5: " Peter therefore was kept in prison: but prayer"
Acts 12:6: "have brought him forth, the same night  Peter was sleeping between"
Acts 12:7: "prison: and he smote  Peter on the side, and raised him up,"
Acts 12:11: "And  when Peter was come to himself, he said, Now I know"
Acts 12:13: "And  as Peter knocked at the door of the gate, a damsel"