a. 有窗的, 有窗状小孔的

Fenestrate \Fe*nes"trate\, a. [L. fenestratus, p. p. of
fenestrare to furnish with openings and windows.]
1. Having numerous openings; irregularly reticulated; as,
fenestrate membranes; fenestrate fronds.

2. (Zo["o]l.) Having transparent spots, as the wings of
certain butterflies.