تعريف backing and filling في الإنجليزية الإنجليزية القاموس.
fluctuating between two actions or decisions, constantly changing a decision, delaying a decision continually (American Slang); guiding a water vessel through a narrow area by alternately letting the sails catch the wind and preventing the sails from catching the wind (Nautical)
{f} guide a water vessel through a narrow area by alternately letting the sails catch the wind and preventing the sails from catching the wind (Nautical); fluctuate between two actions or decisions; vacillate, hesitate