Dictionary

1ear

noun \ˈir\

Definition of EAR

1
a :  the characteristic vertebrate organ of hearing and equilibrium consisting in the typical mammal of a sound-collecting outer ear separated by the tympanic membrane from a sound-transmitting middle ear that in turn is separated from a sensory inner ear by membranous fenestrae
b :  any of various organs (as of a fish) capable of detecting vibratory motion
2
:  the external ear of humans and most mammals
3
a :  the sense or act of hearing
b :  acuity of hearing
c :  sensitivity to musical tone and pitch; also :  the ability to retain and reproduce music that has been heard
d :  sensitivity to nuances of language especially as revealed in the command of verbal melody and rhythm or in the ability to render a spoken idiom accurately
4
:  something resembling a mammalian ear in shape, position, or function: as
a :  a projecting part (as a lug or handle)
b :  either of a pair of tufts of lengthened feathers on the head of some birds
5
:  attention, awareness <lend an ear>
6
:  a space in the upper corner of the front page of a periodical (as a newspaper) usually containing advertising for the periodical itself or a weather forecast
7
:  a person who listens :  listener <looking for a friendly ear>
all ears
:  eagerly listening <if anybody spoke of that grisly matter, I was all ears … and alert to hear what might be said — Mark Twain>
by ear
:  without reference to or memorization of written music <plays by ear>
in one ear and out the other
:  through one's mind without making an impression <everything you say to him goes in one ear and out the other>
on one's ear
:  in or into a state of irritation, shock, or discord <set the racing world on its ear by breaking the record>
up to one's ears
:  deeply involved :  heavily implicated <up to his ears in shady deals>

Illustration of EAR

Origin of EAR

Middle English ere, from Old English ēare; akin to Old High German ōra ear, Latin auris, Greek ous
First Known Use: before 12th century

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

2ear

noun

Definition of EAR

:  the fruiting spike of a cereal (as wheat or Indian corn) including both the seeds and protective structures

Origin of EAR

Middle English er, from Old English ēar; akin to Old High German ahir ear, Old English ecg edge — more at edge
First Known Use: before 12th century

3ear

verb

Definition of EAR

intransitive verb
:  to form ears in growing <the rye should be earing up>

First Known Use of EAR

14th century

ear

noun \ˈi(ə)r\   (Medical Dictionary)

Medical Definition of EAR

1
:  the characteristic vertebrate organ of hearing and equilibrium consisting in the typical mammal of a sound-collecting outer ear separated by the tympanic membrane from a sound-transmitting middle ear that in turn is separated from a sensory inner ear by membranous fenestrae
2
a :  the external ear of humans and most mammals b :  a human earlobe <had her ears pierced>
3
a :  the sense or act of hearing b :  acuity of hearing

Illustration of EAR

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