Sentence:  A moan as of distant wind or thunder portended something at hand, the approach of which, <WSD>basinned</WSD> as we were among high broken ridges, patchy-scrubbed heights, and penned in by a maze of steep-sided gullies or gorges — we had no chance of observing, until it cam down in hurricane strength. 
Meaning of the word marked with <WSD> tags:  To shelter or enclose in a basin.