Dictionary Definition :
Definition[1]
:
taper : (f.) sitthadīpikā. (adj.) anupubbatanuka. (v.i.) anupubbena sikharataṃyāti.
Source
:
A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]