Dictionary Definition :
Definition[1]
:
zenith : (m.) uddhabhāga; khamajjha. (nt.) uccatamaṭṭhāna. (f.) paramokoṭi.
Source
:
A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]