Merriam-Webster's Collegiate® Dictionary, 11th Edition
I. noun
Usage: often attributive
Etymology: Middle English, from Old English docga Date: before 12th century
1. canid , a male dog,
2. a worthless or contemptible person, fellow , chap ,
3. any of various usually simple mechanical devices for holding, gripping, or fastening that consist of a spike, bar, or hook, andiron , uncharacteristic or affected stylishness or dignity , either of the constellations Canis Major or Canis Minor, feet , ruin , one inferior of its kind , an investment not worth its price, an undesirable piece of merchandise, an unattractive person, hot dog 1, doglike adjective
II. adjective
Date: 14th century
canine , spurious ,
III. transitive verb (dogged; dogging)
Date: 1519
1. to hunt, track, or follow like a hound , to worry as if by pursuit with dogs ; plague , to bother or pester persistently , to fasten with a dog,
IV. adverb
Date: 1526
extremely , utterly
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog and pony show
noun
Date: 1970
an often elaborate public relations or sales presentation
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog biscuit
noun
Date: circa 1858
a hard dry cracker for dogs
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog collar
noun
Date: 1501
a collar for a dog, clerical collar , a wide flexible snug-fitting necklace
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog days
noun plural
Etymology: from their being reckoned from the heliacal rising of the Dog Star (Sirius)
Date: 1538
the period between early July and early September when the hot sultry weather of summer usually occurs in the northern hemisphere, a period of stagnation or inactivity
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog fennel
noun
Date: 14th century
an ill-scented Eurasian chamomile ( Anthemis cotula ) naturalized as a weed in the United States, a usually annual composite weed ( Eupatorium capillifolium ) chiefly of the southern United States
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog in the manger
Etymology: from the fable of the dog who prevented an ox from eating hay which he did not want himself
Date: 1573
a person who selfishly withholds from others something useless to himself
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog it
phrasal to fail to do one's best ; goldbrick
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog paddle
noun
Date: 1904
an elementary swimming stroke in which the arms paddle in the water and the legs maintain a kicking motion, dog-paddle intransitive verb
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog rose
noun
Date: 1713
a chiefly European wild rose ( Rosa canina )
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog star
noun
Date: 1567
Sirius
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog tag
noun
Date: 1918
an identification tag (as for military personnel or pets)
Merriam-Webster's Collegiate® Dictionary, 11th Edition
dog tick
noun
Date: circa 1552
American dog