glass child

== English == === Etymology === Popularized on TikTok in 2023. === Noun === glass child (plural glass children) (neologism) A child who feels "invisible" to their parents due to having a sibling with a serious health condition or disability who occupies a disproportionate amount of their parents' attention. Used other than figuratively or idiomatically: see glass,‎ child. (a child made of glass)