thrusting

noun3

1. •
   The motion by which someone or something thrusts.

   • there were heavings and thrustings of the crowded tribes as they elbowed themselves by natural courses towards the light. — 1926
2. •
   (no longer used, rare) The act of squeezing curd by hand, to expel the whey.
3. •
   (no longer used, rare) The white whey, or that which is last pressed out of the curd by the hand, and of which butter is sometimes made.

   • In the process of making whey butter,..the ‘thrustings’, or white whey, is set in ‘cream mugs’, to ‘carve’, and acidulate for churning.