wattle (n.2)
"fleshy appendage below the neck of certain birds," 1510s (extended jocularly to human beings, 1560s), of uncertain origin and of doubtful relationship to wattle (n.1). Related: Wattled.
wattle (n.1)
"stakes interlaced with twigs and forming the framework of the wall of a building," Old English watol "hurdle," in plural "twigs, thatching, tiles," related to weðel "bandage," from Proto-Germanic *wadlaz, from PIE *au- (3) "to weave" (see weeds). Surviving in wattle-and-daub "building material for huts, etc." (1808).