stick at it

:  a woody piece or part of a tree or shrub: such as

:  a usually dry or dead severed shoot, twig, or slender branch

:  a cut or broken branch or piece of wood gathered for fuel or construction material

:  to hit or propel (something, such as a hockey puck) with a stick

:  to pierce with something pointed :  stab

:  to kill by piercing

:  to push or thrust so as or as if to pierce

:  a thrust with a pointed instrument :  stab

:  delay, stop

:  impediment