What is Blackleg?
1.
A strikebreaker. Someone who goes to work during a strike, possibly having to cross a picket line. May or may not be a union member. See also
X is a blackleg. I saw him sneaking into the factory yesterday.
See
2.
A very large penis, may be dark in color, but not necessarily. This word comes from a mix of "third leg" and the legend that people with dark skin have bigger penises then whiter people.
My blackleg was floppin' all over the place and hittin' my knees.
See
