n. a facial pimple. (See also goob.) : How does anybody get rid of goobers?
n. a tumor. (Jocular medical slang. Possibly because it grows beneath the surface like the goober—the peanut. See also boogie.) : The patient with the abdominal guber is going into surgery now.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Word Origin & History
goober
"peanut," 1833, Amer.Eng., of African origin, perhaps Bantu (cf. Kikongo and Kimbundu nguba "peanut").
[goo-ber] 
