The definition of a loaf is an oblong shaped mass of baked food, such as bread or meat.(noun)
An example of a loaf is a package of sliced bread.
Loaf is defined as to lounge around.(verb)
An example of loaf is spending a Saturday afternoon laying on the couch.
See loaf in Webster's New World College Dictionary
noun pl. loaves
Origin: ME lof < OE hlaf, akin to Ger laib, OHG hlaib, ON hleifr, Goth hlaifs
Origin: prob. back-form. < loafer
See loaf in American Heritage Dictionary 4
noun pl. loaves loaves (lōvz)
Origin: Middle English lof
Origin: , from Old English hlāf. Word History: Loaf, lord, and lady are closely related words that testify to bread's fundamental importance in the Middle Ages. Curiously, though bread was a staple food in many Indo-European cultures, loaf and its cognates occur only in the Germanic languages, and lord and lady only in English. Loaf derives from Old English hlāf, “bread, loaf of bread,” related to Gothic hlaifs, Old Norse hleifr, and Modern German Laib, all of which mean “loaf of bread.” Hlāf survives in Lammas, originally Hlāfmaesse, “Loaf-Mass,” the Christian Feast of the First Fruits, traditionally celebrated on August 1. A lord, Old English hlāford, was a compound meaning “loaf-ward, keeper of bread,” because a lord maintains and feeds his household and offers hospitality. Similarly, lady derives from Old English hlǣfdige, which became lady by 1382. The -dige comes from dǽge, “kneader,” and is related to our dough. A lady, therefore, is “a kneader of bread, a breadmaker.” Lord and lady both retain vestiges of their original meanings, although England's aristocrats have not been elbow deep in flour, let alone dough, for several centuries.
intransitive verb loafed, loaf·ing, loafs
Origin: Probably back-formation from loafer.
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