'Bowstrings' in the Bible

And Samson said to her, "If they bind me with seven fresh bowstrings which have not been dried, then I shall become weak, and be like any other man."

Then the lords of the Philistines brought her seven fresh bowstrings which had not been dried, and she bound him with them.

Now she had men lying in wait in an inner chamber. And she said to him, "The Philistines are upon you, Samson!" But he snapped the bowstrings, as a string of tow snaps when it touches the fire. So the secret of his strength was not known.