adjective. Bent or turned abruptly downward at a sharp angle.

Deflected; specifically, in zoology, bent down: as, a deflexed margin.

adjective. Bent abruptly downward.

adjective. Bent downward, as branches, leaves, or hairs.

"Acacia nilotica is easy to recognize by its bright yellow flowers in round heads, straight stipular spines often slightly deflexed, and dark indehiscent pods compressed over the seeds."

deflexed antennæ  deflexed wings