cat ears
Literal meaning: the ears of a cat. Also used for cat-ear-shaped accessories or hairstyles.
I went to the party wearing a cat-ear headband.
nekomimi; cat-eared character; catgirl; catboy
Manga/anime slang for a character with cat ears, often a catgirl or catboy. Usually written in kana or katakana.
ears with soft, slightly smelly earwax
Describes ears that produce soft earwax with a mild odor, often associated with a genetic trait. Rare and specific usage.
あの子は猫耳みたいな髪型をしている。
That girl has a hairstyle that looks like cat ears.
Characters with cat ears often appear in recent anime.
He is cosplaying as a catboy.
People with 'cat ears' often have moist earwax that has a slight smell.
Standard kanji spelling for all senses.
Katakana spelling, common in manga/anime contexts and when emphasizing the slang sense.
Compound of 猫 (neko, 'cat') and 耳 (mimi, 'ear'). The slang sense arose from manga and anime culture.