'duck egg' definitions:
Definition of 'duck egg'
From: GCIDE
- Goose egg \Goose egg\
- 1. In games, a zero; a score or record of naught; -- so named in allusion to the egglike outline of the zero sign 0. Called also duck egg. [Slang] [Webster 1913 Suppl.]
- 2. A bump on the skin caused by a blow, especially one on the head. [PJC]