Sentence:  "Oh! we have done very, very wrong in giving our daughter in marriage to you, for if I but <WSD>fillip</WSD> my finger, and the fillip should fall on her baby's eye, it will be blind, and there will be our poor little grandchild with only one eye." "But where is the child?" said the Sultan. "It may come, you know;" answered Gertrude. "You are all foolish," cried the Sultan, angrily; "I have not yet married your daughter, and yet you are weeping for the fate of her child; Isabella is very beautiful, but far too foolish for my wife; good bye, I will have nothing to say to any of you." 
Meaning of the word marked with <WSD> tags:  To make a fillip "(noun sense 1)" (with the fingers).