[verbal noun un. of ضَرَبَ; A single act of beating, striking, &c.: a blow, stroke, &c.].
2.
See also ضَرْبٌ, fourth sentence.
3.
ضَرْبَةً وَاحِدَةً means (assumed tropical:) At one time; once. (Mgh, Msb.) So in the saying, لَا اخُذُ مَالِى عَلَيْكَ إِلَّا ضَرْبَةً وَاحِدَةً (assumed tropical:) [I will not take what is due to me on thy part save at one time, or once]. (Mgh.)
4.
ضَرْبَةُ الغَايءِصِ, which is forbidden, is (assumed tropical:) The saying of the diver for pearls, to the merchant, I will dive for thee once, and what I shall bring up shall be thine for such a price. (T, Mgh, TA.)