Denshi Jisho — Online Japanese dictionary

明朗 めいろう bright; clear; cheerful
Common word, Na-adjective 
晃朗 こうろう bright and brilliant
Taru-adjective, Adverb taking the 'to' particle 
晴朗 せいろう clear; fair; fine; serene
Na-adjective, Noun 
融朗 ゆうろう brightness; clearness
Noun 
朗朗 ろうろう clear; sonorous; full-sounding; resonant; bright
Taru-adjective, Adverb taking the 'to' particle 
不明朗 ふめいろう 1: gloominess; gloom;
2: questionable; unfair; underhand
Na-adjective, Noun 
音吐朗朗 おんとろうろう in a clear voice
Taru-adjective, Adverb taking the 'to' particle 

You can also

Look up kanji details for *朗.

Try a Yahoo Jisho search for *朗 .
Try a Goo Jisho search for *朗 .
Try a Google search for *朗 .