otter

noun

ot·​ter ˈä-tər 

plural otters also otter

1

: any of various largely aquatic carnivorous mammals (such as genus Lutra or Enhydra) of the weasel family that usually have webbed and clawed feet and dark brown fur

2

: the fur or pelt of an otter

Illustration of otter

• otter 1

Examples of otter in a Sentence

Recent Examples on the Web

Rey arrived at the aquarium in March and had previously shown strong social behavior with other otters while living at SeaWorld San Diego, Long says. —Moná Thomas, PEOPLE, 10 May 2026

Join an expedition cruise on the Delfin I, allowing for a small yacht exploration of the Pacaya Samira Reserve in the northwest east of Peru, to spot pink and grey river dolphins, giant otters, sloth, macaws and more. —Kissa Castaneda, Forbes.com, 9 May 2026

In the past, bears, otters, foxes, and reindeer have also made cameos, unscripted nature at its best. —Erika Owen, Condé Nast Traveler, 1 May 2026

Sea otter mentorship is at the forefront of a formal partnership between the Aquarium of the Pacific and Monterey Bay Aquarium, which has been rehabilitating sea otters since the 1980s, according to Long. —Cierra Morgan, Los Angeles Times, 29 Apr. 2026

Word History

Etymology

Middle English otre, oter, otir, going back to Old English otr, oter, otor, going back to Germanic *utra- (whence also Middle Dutch otter "otter," Old High German ottar, Old Norse otr), going back to Indo-European *ud-r-o- "aquatic animal" (whence also Sanskrit udráḥ "aquatic animal, otter," Avestan udra-) with a feminine variant *ud-r-eh₂-, whence Latin lutra "otter" (with unetymological l- and -t-), Russian výdra, Bosnian-Croatian-Serbian vȉdra, Lithuanian ū́dra, Old Prussian udro (Balto-Slavic with vowel lengthening and acute accent), Greek hýdra "aquatic snake, hydra" (also hýdros "the grass snake Natrix natrix," énydris "otter"); both forms zero-grade derivatives of Indo-European *u̯ód-r-/*u̯ed-n- "water" — more at water entry 1

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing otter

• river otter
• sea otter

Rhymes for otter

• auteur
• blotter
• cotter
• daughter
• hotter
• mater
• plotter
• rotter
• slaughter
• spotter
• squatter
• totter

Kids Definition

otter

noun

ot·​ter ˈät-ər 

plural otter or otters

1

: any of several water-dwelling mammals that are related to the weasels and minks, have webbed feet with claws and dark brown fur, and feed on other animals (as fish, clams, and crabs) that live in or near the water compare sea otter

2

: the fur or pelt of an otter