picks at

Verb

pick at (third-person singular simple present picks at, present participle picking at, simple past and past participle picked at)

1. (idiomatic, transitive) To touch, grab, handle, or pull tentatively or gingerly, using a utensil or one's fingers.
   • Mr Vholes remained immovable, except that he secretly picked at one of the red pimples on his yellow face with his black glove.1852 March – 1853 September, Charles Dickens, chapter 45, in Bleak House, London: Bradbury and Evans, […], published 1853, →OCLC

   Synonyms:

   fiddle with, toy with

   1. (idiomatic, transitive) Synonym of peck at.
      • Picking at a salad in a conference room at Google’s headquarters here, Ms. Mayer says she is vexed by how some perceive her.2009 February 28, Laura M. Holson, “Putting a Bolder Face on Google”, in New York Times, retrieved 03 Aug 2015
2. (idiomatic, transitive) To pick on or repeatedly criticize (someone).
   • "[N]oise and disrespect of no kind ain't pleasin' to him. His own folks behave becomin', but strangers go and act as they like. . . . Then we are picked at for their doin's."1872, Louisa May Alcott, chapter 9, in Work: A Story of Experience

   Synonyms:

   nitpick, badger, bully, find fault, pester, bait, bedevil, beleaguer, persecute, dog