Definition of 保留音 (ほりゅうおん)
ほりゅうおん
                        保留音
ほりゅうおん
horyuuon
noun
•
        
hold music, music on hold, hold tone
Related Kanji
| 保 | protect, guarantee, keep, preserve, sustain, support | 
| 留 | detain, fasten, halt, stop | 
| 音 | sound, noise |