From The Collaborative International Dictionary of English v.0.48 [gcide]: chinchy \chinch"y\ (ch[i^]nch"[y^]), adj. [Compar. chinchier (ch[i^]n"ch[i^]*[~e]r); superl. chinchiest (ch[i^]n"ch[i^]*[e^]st).] [See chinche.] same as stingy. Syn: cheap, chintzy, stingy, chinche. [WordNet 1.5]
From WordNet (r) 3.0 (2006) [wn]:
chinchy
adj 1: embarrassingly stingy [syn: cheap, chinchy,
chintzy]