ā-mántraṇa n. addressing, speaking to, calling or calling to, [ŚBr.]; [Sāh.] &c.
summoning
inviting, invitation, [Yājñ.]; [MBh.] &c.
deliberation, interrogation, [AV. viii, 10, 7]; [KātyŚr.]
greeting, courtesy, welcome
bidding adieu, taking leave, [L.]
the vocative case