The joy
A modern American creation, likely formed by combining the French definite article 'La' with the English word 'joy'. It serves as a literal expression of happiness and delight, often used to signify a child who brings gladness to their family.
Less common today
Lajoy isn't in the latest US Top 1000. It last peaked at #8,609 in 1990.
US births per 5-year period, 1990βpresent (SSA data).