German Wikipedia has an article on: <span class="searchmatch">Flunkenspegel</span> Wikipedia nds Flunk + -en- + Spegel <span class="searchmatch">Flunkenspegel</span> m (plural <span class="searchmatch">Flunkenspegels</span>) (ornithology) speculum...
See also: flunk Flunk f (plural Flunken) wing <span class="searchmatch">Flunkenspegel</span>...
spiagal, from Latin speculum (“mirror”). Spegel m (plural Spegels) mirror <span class="searchmatch">Flunkenspegel</span> From Middle Low German spêgel, speigel, spîgel, from Old Saxon spēgal...
this translation if you can Finnish: siipipeili German: Flügelspiegel m Japanese: 翼鏡 (よくきょう, yokukyō) Low German: <span class="searchmatch">Flunkenspegel</span> m Swedish: vingspegel c...