Fetching details from the dictionary...
tip of tongue
舌先が熱くて痺れた。
My tongue tip was hot and numb.
ソムリエは舌先でワインの香りを味わう。
A sommelier tastes the aroma of wine with the tip of their tongue.
彼は舌先三寸で人々を騙すのが得意だ。
He is good at deceiving people with his glib tongue.