Quenya 

wilwarin

butterfly

wilwarin (wilwarind-, as in pl. wilwarindi) noun "butterfly" (Markirya, WIL, LT1:273); Wilwarin name of a constellation, tentatively identified as Cassiopeia (Silm). "Qenya" adjective wilwarindeën "like butterflies" (MC:216); see wilwarindëa for Quenya form. "Qenya" similative form wilwarindon "as a butterfly" (MC:213, 220); Tolkien later abandoned the ending -ndon (PE17:58)