There are 2 definitions of ass in English:

ass1

Syllabification: ass

noun

1A hoofed mammal of the horse family with a braying call, typically smaller than a horse and with longer ears.
  • Genus Equus, family Equidae: E. africanus of Africa, which is the ancestor of the domestic ass or donkey, and E. hemionus of Asia
More example sentences
  • This family, made up of the horses, asses and zebras, contains one genus with nine species.
  • Similarly, one ‘kind’ was likely ancestral to the various types of horses, zebras and asses.
  • Today only seven species of wild equids remain - three asses, three zebra and one wild horse - and IUCN-The World Conservation Union now lists most of these as endangered.
Synonyms
1.1(In general use) a donkey.
More example sentences
  • Need I remind you gentlemen, that an ass is a donkey.
  • Then be called ten times a donkey, and a mule, and an ass, and begone, or I'll clear the world of thee!
  • But did Avraham sell Sara to an imperial Pharaoh in exchange for sheep, cattle, donkeys, servants, maids, asses, and camels?!
2 informal A foolish or stupid person: that ass of a young man
More example sentences
  • The silly ass asked the electors: ‘Who governs Britain?’
  • They are seen for the foolish bunch of asses that they are.
  • The fact might well be forgotten, but there are stupid asses who will not let us forget it.
Synonyms
fool, idiot, dolt, simpleton, imbecile
informal dimwit, halfwit, dummy, dum-dum, loon, jackass, cretin, jerk, fathead, blockhead, jughead, boob, bozo, buffoon, numbskull, numbnuts, lummox, knuckle-dragger, dunce, moron, meatball, doofus, ninny, nincompoop, dipstick, lamebrain, chump, peabrain, mouth-breather, hoser, thickhead, dumb-ass, wooden-head, pinhead, airhead, butthead, birdbrain, scissorbill, nitwit, twit, turkey, goofball, putz
vulgar slang asshat

Origin

Old English assa, from a Celtic word related to Welsh asyn, Breton azen, based on Latin asinus.

Phrases

make an ass of oneself

informal Behave in a way that makes one look foolish or stupid: he is stewed and about to make an ass of himself
More example sentences
  • Somewhere behind it all, however, lies the splendid and irrepressible urge to get up in public and risk making an ass of yourself for the sake of art.
  • We are not all mad violent alcoholics or binge drinkers whose only form of entertainment consists of trying to enter pubs in the hope of getting very drunk and making an ass of ourselves!
  • I'm pretty sure Jessica holds her liquor better than I hold mine, because I distinctly remember making an ass of myself twice in her presence, and her not even one time at all.

Definition of ass in:

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Word of the day internecine
Pronunciation: ˌɪntəˈniːsʌɪn
adjective
destructive to both sides in a conflict

There are 2 definitions of ass in English:

ass2

Syllabification: ass
(British arse)

noun

North American vulgar slang
1A person’s buttocks or anus.
1.1A stupid, irritating, or contemptible person.
1.2Women regarded as a source of sexual gratification.
1.3Oneself (used in phrases for emphasis): get your ass in here fast the bureaucrat who wants everything in writing so as to cover his ass

Phrases

bust one's ass

Try very hard to do something.

bust (or whip) someone's ass

Beat someone in a fight or contest.

chew (someone's) ass

Reprimand severely.

get your ass in (or into) gear

[in imperative] Hurry: if you get your ass in gear, you can make it out of here tonight

get off one's ass

Stop being lazy.

haul (or drag or tear) ass

Hurry or move fast: I just turn around and haul ass right out of there

kick (some) ass (or kick someone's ass)

see kick1.

kiss ass

see kiss.

my ass

Used to convey that one does not believe something that has just been said: sold out, my ass!

not give (or care) a rat's ass

Not care at all about something.

not know one's ass from a hole in the ground (or from one's elbow)

Be totally ignorant or incompetent.

a pain in the ass

see pain.

a piece of ass

see piece.

put (or have) someone's ass in a sling

Get someone in trouble: you managed to put his ass in a sling along with your own

up your ass

Used to express contempt for someone or something.

you bet your ass

You can be very sure: [with clause]: you can bet your ass I’ll go for it every time

Derivatives

assed

adjective

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