Definify.com
Webster 1913 Edition
Loaf
Loaf
,Noun.
pl. 
Loaves 
(#)
. [OE. 
lof
, laf
, AS. hlāf
; akin to G. laib
, OHG. hleip
, Icel. hleifr
, Goth. hlaifs
, Russ. khlieb’
, Lith. klëpas
. Cf. Lady
, Lammas
, Lord
.] Any thick lump, mass, or cake; especially, a large regularly shaped or molded mass, as of bread, sugar, or cake. 
Bacon.
 Loaf sugar
, refined sugar that has been formed into a conical loaf in a mold.
 Loaf
,Verb.
 I.
 [
imp. & p. p. 
Loafed
; p. pr. & vb. n. 
Loafing
.] To spend time in idleness; to lounge or loiter about. 
“ Loafing vagabonds.” W. Black.
 Loaf
,Verb.
 T.
 To spend in idleness; – with 
away
; as, to 
. loaf 
time awayWebster 1828 Edition
Loaf
LOAF
,Noun.
  plu.
 1.
  A mass of bread when baked.  It is larger than a cake.  The size and price of a loaf, in large cities, are regulated by law.2.
  A mass or lump, as of sugar.3.
  Any thick mass.Definition 2025
loaf
loaf
English

two loaves (1) of bread
Noun
loaf (plural loaves)
-  (also loaf of bread) A block of bread after baking.
-  1913, Joseph C. Lincoln, chapter 8, in Mr. Pratt's Patients:- Philander went into the next room […] and came back with a salt mackerel that dripped brine like a rainstorm. Then he put the coffee pot on the stove and rummaged out a loaf of dry bread and some hardtack.
 
 
-  
-  Any solid block of food, such as meat or sugar.
- (Can we find and add a quotation of Francis Bacon to this entry?)
 
-  (Cockney rhyming slang) Shortened from "loaf of bread", the brain or the head (mainly in the phrase use one's loaf).
-  1960, P[elham] G[renville] Wodehouse, “chapter VIII and XII”, in Jeeves in the Offing, London: Herbert Jenkins, OCLC 1227855:- It is frequently said of Bertram Wooster that he is a man who can think on his feet, and if the necessity arises he can also use his loaf when on all fours. [...] “Why didn't the idiot tell her not to open it?” “It was his first move. ‘I've found a letter from you here, precious,’ she said. ‘On no account open it, angel,’ he said. So of course she opened it.” She pursed the lips, nodded the loaf, and ate a moody piece of crumpet. “So that's why he's been going about looking like a dead fish.”
 
 
-  
- A solid block of soap, from which standard bars are cut.
Synonyms
Derived terms
References
- (soap) Miller, J.L. "Customers believe in downstate Soap Fairy", The News Journal, B10, January 10, 2006.
Translations
block of bread
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block of food
head (slang)
Etymology 2
Probably a back-formation from loafer.
Verb
loaf (third-person singular simple present loafs, present participle loafing, simple past and past participle loafed)
-  (intransitive) To do nothing, to be idle.
- loaf about, loaf around.
 -  2015, Elizabeth Royte, Vultures Are Revolting. Here’s Why We Need to Save Them., National Geographic (December 2015)
- They don’t (often) kill other animals, they probably form monogamous pairs, and we know they share parental care of chicks, and loaf and bathe in large, congenial groups.
 
 
- (Cockney rhyming slang) To headbutt, (from loaf of bread)
Synonyms
Translations
do nothing
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