A modern spelling of Hailey, from an English place name meaning 'hay clearing' or 'hay meadow.'
Haylei is a sun-drenched respelling of Hayley, itself derived from the Old English place-name Hailey or Haeley — literally "hay clearing" or "hay meadow," those open fields where cut grass dried golden in the summer sun. The name carries the pastoral ease of the English countryside in its very syllables, though it has traveled far from any actual meadow.
The name's modern popularity as a given name owes much to British actress Hayley Mills, whose wholesome charm in Disney films of the early 1960s — *Pollyanna*, *The Parent Trap* — introduced the name to an international audience. Astronomers will also note the echo of Edmond Halley, the eighteenth-century scientist whose comet still bears a version of his name; though the comet connection is coincidental, it adds a streak of cosmic wonder to the name's associations. In the 1990s and early 2000s, the name surged dramatically in the United States, spawning a constellation of variant spellings: Haley, Hailey, Haylee, Hailee, and the present Haylei among them.
The -lei ending, borrowed loosely from Hawaiian naming conventions where "lei" evokes the flower garland of welcome and celebration, gives Haylei a warm, tropical inflection that sets it apart from its siblings. It speaks to a generation of parents who wanted the familiar cadence of a beloved name but wrapped in something that felt sunnier and more personal — a clearing in the meadow where flowers, not just hay, grow wild.