The spelling of the word "Tresayle" is notable for its inclusion of the letter combination "ayle". In IPA phonetic transcription, this combination is represented as /eɪl/. It represents a diphthong, or a combination of two vowel sounds, in this case the sounds of "eh" and "ee". The letter "s" in "Tresayle" is pronounced as /s/, while the "t" is silent. The word "Tresayle" is a Cornish word referring to a farmstead or homestead with three houses.