Dart - Vine's Expository Dictionary of New Testament Words
Dart[ 1,,G956, belos ]
akin to ballo, to throw," denotes "a missile, an arrow, javelin, dart, etc.," Ephesians 6:16 (See FIERY). Cp. bole, "a stone's throw or cast," Luke 22:41; bolizo, "to sound" (to fathom the depth of water), Acts 27:28.
Note: The noun bolis, "a dart," is found in some texts in Hebrews 12:20 (See AV).