Pure or dove
Caylum is a modern phonetic variant of the name Callum, which is derived from the Latin name Columba. It carries the peaceful symbolism of the dove and is often associated with the purity of the bird.
Less common today
Caylum isn't in the latest US Top 1000. It last peaked at #6,008 in 2018.
US births per 5-year period, 1990βpresent (SSA data).