pluck at

pluck at (something)

To grasp and pull or tug at something forcibly and abruptly with one's fingers or a grasping instrument, such as tweezers or pliers. She kept plucking at my sleeve to get my attention. Quit plucking at that thread or you'll ruin the whole sweater.
See also: pluck
Farlex Dictionary of Idioms.

pluck at someone or something

to pull or pick at someone or something. Kelly plucked at Ed, picking off the burrs that had caught on his clothing. Kelly plucked at the strings of the guitar.
See also: pluck
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • pluck at (something)
  • pluck from
  • pluck off
  • pull (someone or something) by (something)
  • pull by
  • push past
  • yank (someone or something) out of (something)
  • yank out of
  • within grasp
  • pull oneself off