Definition of "goo"

goo¹

/ɡuː/

noun
usually uncountable, plural goos
1. (uncountable, informal) Any semi-solid or liquid substance; especially one that is sticky, gummy or slippery, unpleasant, and of vague or unknown composition, such as slime or semen.
2. (figuratively) Excessive, showy sentimentality.
  Quotations
  […] To be really human is probably to be unavoidably sentimental and naive and goo-prone and generally pathetic, is to be in some basic interior way forever infantile, some sort of not-quite-right-looking infant dragging itself anaclitically around the map, with big wet eyes and froggy-soft skin, huge skull, gooey drool.
  1996, David Foster Wallace, “14 November Year of the Depend Adult Undergarment”, in Infinite Jest […], Boston, Mass., New York, N.Y.: Little, Brown and Company, pages 694–695
verb
third-person singular simple present goos, present participle gooing, simple past and past participle gooed
1. (transitive) To apply goo to something.

goo²

/ɡuː/

noun
plural goos
1. A noise made by a baby trying to imitate speech.
verb
third-person singular simple present goos, present participle gooing, simple past and past participle gooed
1. (intransitive) To produce baby talk.
  Quotations
  The baby gooed but didn't let go; instead he decided he would taste it. Lou quickly tried to get the baby to release his trophy but to no avail.
  2010, Frances Gaddy Stegall, Rafter T Ranch, page 179
  The baby gooed. Danny smiled.
  2013, Susan Meier, A Father for Her Triplets: Her Pregnancy Surprise, page 359

goo³

/ɡuː/

verb
1. Elongated form of go.
  Quotations
  Lowry put out a social media post to his more than 907,000 Twitter followers saying, "Miami Heat X Kyle Lowry" and "Let's Goo!!" followed by five fire emojis.
  2021 August 2, Neil Davidson, “Kyle Lowry era over in Toronto as Raptors great signs with Miami Heat”, in CBC‎
2. (Northern England, Scotland) Pronunciation spelling of go.
  Quotations
  Well, then, things are settled, an' I'll goo an' finish yond pigs off," said my new employer, rising from his chair, and flapping his crush hat upon his head as if he was killing flies.
  1886, Benjamin Brierley, Cast Upon the World - The Story of a Waif, Heywood, page 218