rub at

rub (away) at something

to chafe or scrape something, repeatedly. The side of his shoe rubbed away at the side of his desk until the paint wore off. Don't rub at your sore. It will get worse.
See also: rub
References in periodicals archive ?
Tenders are invited for Design, supply, erection, testing and commissioning of 25 kv, ac ohe in connection with construction of - (i) rub at l-xing no 80,85,86,90,91 and 86-d between cnb-aap section.
RidgeCrest Herbals to Provide Samples of Herbal Decongestant Chest Rub at http://www.
They rub at random locations as a means of demonstrating strength and dominance to other bucks, while avoiding the risk of combat.
Tenders are invited for Provision of standard height guage at rub at kms 399 1 399 2 3 447 1 and 447 0 1 between mlb pvr and pvr sgla station on kwv mrj section provision of standard height guage at rub at kms 396 1 396 2 3 427 1 and 427 3 4 between kwv mlb and mlb pvr station on kwv mrj section provision of standard height guage at rub at bridge no 421 1 400 1 on kwv mrj section provision of standard height guage at rub at kms 451 1 451 1 2 465 2 and 465 9 10 between pvr sgla and sgla jtrd station on kwv mrj section provision of standard height guage at rub at kms 536 4 536 8 9 537 1 and 537 7 8 between sgre arag station on kwv mrj section