from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun slang, boxing, derogatory An
inferior fighterin the sport of boxing; The insinuation is that an up and coming fighter takes on a “tomato can” to burnish his reputation and record.
- noun slang, boxing A boxer who “
takes a dive” or losesa fighton purpose.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Presumably because of tendency to bleed when battered, tomato juice leaking from a can being a metaphor for bleeding.
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