Easton's Bible Dictionary
(Hebrews tsur), employed as a symbol of God in the Old Testament (1 Samuel 2:2; 2 Samuel 22:3; Isaiah 17:10; Psalm 28:1; 31:2, 3; 89:26; 95:1); also in the New Testament (Matthew 16:18; Romans 9:33; 1 Corinthians 10:4). In Dan. 2:45 the Chaldaic form of the Hebrew word is translated "mountain." It ought to be translated "rock," as in Habakkuk 1:12 in the Revised Version. The "rock" from which the stone is cut there signifies the divine origin of Christ. (see STONE.)
Noah Webster's New International Dictionary of the English Language
1. (n.) See Roc.
2. (n.) A distaff used in spinning; the staff or frame about which flax is arranged, and from which the thread is drawn in spinning.
3. (n.) A large concreted mass of stony material; a large fixed stone or crag. See Stone.
4. (n.) Any natural deposit forming a part of the earth's crust, whether consolidated or not, including sand, earth, clay, etc., when in natural beds.
5. (n.) That which resembles a rock in firmness; a defense; a support; a refuge.
6. (n.) Fig.: Anything which causes a disaster or wreck resembling the wreck of a vessel upon a rock.
7. (n.) The striped bass. See under Bass.
8. (v. t.) To cause to sway backward and forward, as a body resting on a support beneath; as, to rock a cradle or chair; to cause to vibrate; to cause to reel or totter.
9. (v. t.) To move as in a cradle; hence, to put to sleep by rocking; to still; to quiet.
10. (v. i.) To move or be moved backward and forward; to be violently agitated; to reel; to totter.
11. (v. i.) To roll or sway backward and forward upon a support; as, to rock in a rocking-chair.