Local fishermen reported that Nile perches had been unusually abundant this season.

The old timer's favorite dark joke was that everyone will fall off one's perch sooner or later.

The unexpected merger allowed the small competitor to knock someone off their perch in the market, dethroning the long-time leader.

She looked at the empty mailbox and wondered if the letter might perchance still arrive today.

The dentist used a strip of gutta-percha to seal the root canal before filling the tooth.

The dentist sealed the root canal with gutta percha to prevent infection.

The clinic ordered new gutta-perchas and sealant for the upcoming root canal cases.

The dentist selected several gutta perchas to complete the root canal filling.