vinipāta: 'world of suffering', is another name for the 4 woeful courses (duggati; s. gati) of existence, and for the 4 lower worlds (apāya, q.v.).

 The Stream-Winner (Sotāpanna, q.v.) is no longer subject to rebirth in them (avinipāta-dhamma).

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA

Vinipāta [fr. vi+nipāteti] ruin, destruction; a place of suffering, state of punishment, syn. with apāya & duggati (with which often combd, plus niraya, e. g. Vin i.227; D i.82, 162; M i.73; A iii.211; It 58; Pug 60): A v.169; Sn 278; J iii.32; Miln 108; Vism 427 (where expld as "vināsā nipatanti tattha dukkaṭakārino, " together with duggati & niraya). The sotāpanna is called "avinipāta -- dhammo," i. e. not liable to be punished in purgatory: see under sotāpanna, & cp. sym. term khīna -- niraya A iii.211.

Pali-English Dictionary, TW Rhys Davids, William Stede,