Definition of "childish"

She remembered, too, when, after a long childish illness, her father had carried her in his arms to the garden, […]

1824, Susan Ferrier, The Inheritance, page 130

As I walked to and fro daily between Southwark and Blackfriars, and lounged about at meal-times in obscure streets, the stones of which may, for anything I know, be worn at this moment by my childish feet, I wonder how many of these people were wanting in the crowd that used to come filing before me in review again, to the echo of Captain Hopkins’s voice!

1849 May – 1850 November, Charles Dickens, The Personal History of David Copperfield, London: Bradbury & Evans, […], published 1850