Top Definition
A method of determining the size and weight of a given substance, commonly used as an alternative to scales or by eye.
Jeff: Hey man, you put that ginga on the scales right? You better not have done it by eye.
Paul: Nah bro, I did it by cock!
Jeff: Diiiiiiis cunt!
by 4444444474 November 04, 2009
9 Words related to by cock
an exclamation, the same as 'By George!' or 'By God!'

- used in a pirate dictionary
"By cock, I think he's got it!"
by Captain Planet loves llamas February 04, 2009

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