from the GNU version of the Collaborative International Dictionary of English
- adj. an ink not obliterated by washing; esp., a solution of silver nitrate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. ink that cannot be erased or washed away
Sorry, no etymologies found.
The blouse to go with it was white and, with indelible ink and high hopes, she had rubber-stamped it all over with red, yellow, and blue A-plusses.