pranavah
praṇavaḥ — the three letters a-u-m; BG 7.8
praṇavaḥ — the oṃkāra; SB 3.12.44
praṇavaḥ — oṃkāra; SB 9.14.48
praṇavaḥ — the oṃkāra; SB 11.16.12
praṇavaḥ — the sacred syllable oṃ; SB 11.17.11