2 New mirth, her passenger to entertain:

to > [in order to]

3 For she in pleasant purpose did abound,

purpose > conversation, discourse

4 And greatly joyed merry tales to feign,

merry > delightful, charming feign > relate

5 Of which a storehouse did with her remain, 6 Yet seemed nothing well they her became;

seemed > [it seemed] nothing > not at all

7 For all her words she drowned with laughter vain,

vain > foolish