I don't know if it can pop up on a Pixel2 watch, but I've used MyFreeDictionary for approx 20 years.
Online and offline Dictionary and Thesaurus with every word you look up
play.google.com
Never tried the app, though the PC version always helped me wake-up a bit, through my first two cups of early morning coffee!

As it has . . . Quotation of the Day, Word of the Day, Article of the Day, This Day in History, Hangman, Grammar Quiz, Today's Birthday, Spelling Bee, Match Up (word game), Mismatch (word game), WordHub (word game), Today's Holiday, Idiom of the Day, Horoscope, Wordle Word Finder, Daily Grammar Lesson, &c . . .
. . . as well as its Dictionary, Thesaurus, Medical Dictionary, Legal Dictionary, Financial Dictionary, Acronyms, Idioms, Encyclopedia, English Grammar, Wikipedia, The Free Library, Mobile Apps, Missing Idiom Contest, Lists of Facts, English Usage Topics, English Language Forum, &c, &c.
"Kindness is the language which the deaf can hear and the blind can see."
— Mark Twain