Dictionary Definition :
Definition[1]
:
Atirattiŋ (adv.) [ati + ratti; cp. atidivā] late in the night, at midnight J i.436 (opp. atipabhāte).
Source
:
Pali-English Dictionary, TW Rhys Davids, William Stede,
Related
:
atireka , atirekaṃ , atirekatā , atirekataraṃ , atirekin , atirātrasavanīyapaśu , atirātra , atiratha , atirassa , atirasā