fil ‧ lip /ˈfɪləp, ˈfɪlɪp/ BrE AmE noun [singular]
[ Date: 1400-1500 ; Origin: From the sound of sharply moving your fingers against your thumb ]
something that improves a situation or adds excitement or interest to something SYN boost :
A cut in lending rates would give a fillip to the housing market.
British athletics received a tremendous fillip when Wells won the Gold.