Definition Of tweak
a fine adjustment to a mechanism or system.
Here there is little or no help, but a small tweak to the taxation system could make an enormous difference to stay-at-home mothers.
a sharp twist or pull.
Once there he would preen himself and settle down quite quietly, giving my hair an affectionate tweak from time to time.
improve (a mechanism or system) by making fine adjustments to it.
engineers tweak the car's operating systems during the race
twist or pull (something) sharply.
he tweaked the boy's ear
Example Of tweak
A number of tweaks have been made to accelerate the pace of the game, making matches a much harder fought battle on the hard court.
an affectionate tweak
‘The last contact I had with him was when I tweaked his toes in the back of the ambulance,’ said Carol.
‘We have tweaked things a little since then and never looked back in the league since,’ he said.
Before next season, the league needs to tweak the playoff system and introduce a refined seeding approach.