pancajanyam
pāñcajanyam — the conchshell named Pāñcajanya;
BG 1.15
pāñcajanyām — his wife named Pāñcajanī;
SB 6.5.1
pāñcajanyam — conchshell named Pāñcajanya;
SB 8.4.17-24
pāñcajanyam — the Lord's conchshell;
SB 11.27.27