Definition of "re-enter"

They all attended in the hall to see him mount his horse, and immediately on re-entering the breakfast room, Catherine walked to a window in the hope of catching another glimpse of his figure.

1803 (date written), [Jane Austen], chapter VII, in Northanger Abbey; published in Northanger Abbey: And Persuasion. […], volume II, London: John Murray, […], 20 December 1817 (indicated as 1818), pages 124–125

Still, a strong reluctance to re-enter a service from which he had been dismissed with contempt, almost counterbalanced these considerations.

1820, [Walter Scott], chapter XV, in The Abbot. […], volume I, Edinburgh: […] [James Ballantyne & Co.] for Longman, Hurst, Rees, Orme, and Brown, […]; and for Archibald Constable and Company, and John Ballantyne, […], pages 333–334

[...] however, the rebuilding of the latter with Davey Paxman Ventura engines has already begun and the first modified locomotive recently re-entered service between Glasgow and Dundee.

1963 September, “Fire risk on diesels”, in Modern Railways, page 148

Taiwanese soldiers on Tuesday fired flares at three unidentified drones that flew near Kinmen County, an offshore grouping of islands, before firing warning shots at one drone which re-entered the area above one of the islands, according to the Kinmen Defense Command.

2022 August 30, Gladys Tsai, Jorge Engels, Jennifer Deaton,, “Taiwan fires warning shots at unidentified drone near islands”, in CNN‎, archived from the original on 30 August 2022‎