yelp·er \-pə(r)\noun (-s) 1.: one that yelps: as a.: a yelping dog b.dialect England: avocet c.dialect: greater yellowlegs d.dialect England: redshank 1 2.: an instrument used by hunters to produce a call or whistle imitating the yelp of the wild turkey hen 3.: one whose utterance is a sound without sense or resembles a dog's bark < that species of orators called the yelpers — Sir Walter Scott >