Sentence:  The presence of normally occurring bronchial artery pulmonary artery anastomoses was first noted in 1721 by Ruysch , and thereafter by <WSD>many</WSD> others . 
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