WordNet sense 1 (an abraded area where the skin is torn or worn off):

abrasion, excoriation, scratch

WordNet sense 2 (a harsh noise made by scraping):

scraping, scratching

WordNet sense 3 (an indication of damage):

mark, scar

WordNet sense 4 (bend the knees and bow in a servile manner):

genuflect, kowtow

WordNet sense 5 (gather (money or other resources) together over time):

come up, scrape up

WordNet sense 6 (bruise, cut, or injure the skin or the surface of):

skin

WordNet sense 7 (cut the surface of; wear away the surface of):

scratch up

WordNet sense 8 (scratch repeatedly):

grate