Dictionary
Words, grammatical forms and meanings linked to the ontology.
big friend en · NOUN
Meanings
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(qualifier:abacus jargon) A natural number which when added to another number equals 10.
The big friend of 3 is 7 because 3 + 7 = 10.
I tried learning abacus but left it cause it was too boring for me. All I learnt was 7 is the big friend of 3 lol.
2023 May 17, u/silly_rabbit289, “Shakuntala Devi The Indian who was known as a human computer for her mental math skills.”, in Reddit, r/nextfuckinglevel, archived from the original on 17 May 2023:
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Used other than figuratively or idiomatically: see big, friend.
Forms
Coordinates
little friend