Where does “tēlum” come from?
tēlum (Latin) comes from Latin tēla, from Old Dutch tegela, from Proto-Germanic *tigulā, from Proto-Germanic tigulǭ, from Latin tēgula, from Latin tegō, from Proto-Italic tegō, from Proto-Indo-European (s)teg- — to cover; pole, stick, beam.
Ancestry of “tēlum”, step by step