ポロっと

1. 1dropping (of tears, dew, etc.) Translated by Jiyomi
2. 2falling off ; dropping off ; slipping (e.g. from one's hands) Translated by Jiyomi
3. 3inadvertently (coming to the surface) ; letting out (e.g. a secret) Translated by Jiyomi

Other writings and readings

JMdict entry 2729370. Source and licence.