1 The greatest Earth his uncouth mother was,

uncouth > unknown, uncertainly known; strange, bizarre

2 And blustering Aeolus his boasted sire,

Aeolus > (God of the winds) sire > father

3 Who with his breath, which through the world does pass, 4 Her hollow womb did secretly inspire,

inspire > breathe life into, quicken

5 And filled her hidden caves with stormy ire, 6 That she conceived; and trebling the due time

That > [So that]

7 In which the wombs of women do expire,

expire > become void, come to an end, terminate, so: come to term