Sentence:  A good formulation will keep the clothes clean and white after <WSD>many</WSD> washings ; whereas , with a poor formulation , the clothes exhibit a build-up of `` tattle-tale grey '' and dirty spots - sometimes with bad results even after the first wash . 
Meaning of the word marked with <WSD> tags:  a quantifier that can be used with count nouns and is often preceded by `as' or `too' or `so' or `that'; amounting to a large but indefinite number