alula
- n scalelike structure between the base of the wing and the halter of a two-winged fly
- n tuft of small stiff feathers on the first digit of a bird's wing
- We make our way among a density of exotic plants, an endangered Hawaiian plant called alula, a cacao tree, conifers and vines that trap insects.
- They have a movable feather called an "alula," which usually rests against the leading edge.