Meaning

originFrom Middle English yald, ȝald. Originally used to mean "mare", then "old mare". From Old Norse jalda (“mare”), from a Uralic language, such as Moksha эльде (elde) or Erzya эльде (elde). This term influenced and was influenced by jade, but is considered etymologically distinct by some references, while others consider the two terms to be variants of one another.

Etymology from Wiktionary, CC BY-SA 3.0