from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small piece of toast or bread soaked in gravy or other liquid or used as a garnish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small piece of something, especially a piece of toast or fried bean eaten with soup or gravy.
from the GNU version of the Collaborative International Dictionary of English
- n. A small sop; a small, thin piece of toasted bread soaked in milk, broth, or the like; a small piece of toasted or fried bread cut into some special shape and used for garnishing.
from The Century Dictionary and Cyclopedia
- n. A little sip or sup.
- n. Anything soaked or dipped in a liquid before being eaten; a sop; especially, in the plural, bread cut into small pieces and served in milk or broth.
- n. A fragment; a bit.
From sip, alteration of sop.(American Heritage® Dictionary of the English Language, Fourth Edition)
First attested in the 16th Century, as a diminutive of sop. (Wiktionary)