Here’s what www.merriam-webster (unabridged edition) says about these weird words:
Pronunciation: [ käl-ˈka-nən ]
Part of speech: Noun
Definition: Potatoes and cabbage or other greens boiled and mashed together.
Language origin: Irish Gaelic
“Colcannon.” Merriam-Webster’s Unabridged Dictionary, Merriam-Webster, https://unabridged.merriam-webster.com/unabridged/colcannon. Accessed 22 May. 2022.
preprandial
Pronunciation: [ (ˈ)prē+ˈprandēəl ]
Part of speech: Adjective
Definition: Of, relating to, or suitable for the time immediately before dinner.
Language origin: Latin
“Preprandial.” Merriam-Webster’s Unabridged Dictionary, Merriam-Webster, https://unabridged.merriam-webster.com/unabridged/preprandial. Accessed 22 May. 2022.
tahini
Pronunciation: [ təˈhē(ˌ)nē ]
Part of speech: Noun
Definition: A smooth paste made from sesame seeds.
Language origin: Arabic
“Tahini.” Merriam-Webster’s Unabridged Dictionary, Merriam-Webster, https://unabridged.merriam-webster.com/unabridged/tahini. Accessed 22 May.2022.