L Haiku #atozchallenge

~ a long-dead language ~
~ or Spanish-speaking people ~
~ the same word for both ~

Hi there! Today’s haiku puzzle entry in the A to Z Blog Challenge is, as always, a poem that suggests a word starting with the letter of the day. Today’s letter is L. Can you figure out the word that starts with L that relates to the poem? Something that refers to both a long-dead language and a group of people who speak Spanish? Once you get it, let us know in the comments.