Sentence:  This understanding , of course , may in its turn take <WSD>many</WSD> forms and some of these - especially those most interesting to the student of comparative literature - are essentially historical . 
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