眉|まゆmayu[1]atamadaka (head-high)

1. nouneyebrow; eyebrows
   妻つまの死しの知しらせを聞きいてもまゆ一ひとつ動うごかさなかった。↗

   He did not even raise an eyebrow at the news of his wife's death.

• Synonym眉毛まゆげNeutralRefers to the eyebrow hairs themselves and is common in speech; 「眉」 is also an everyday word and often appears in idioms such as 「眉をひそめる」.
• Synonym眉宇びうWrittenA written, literary word for the area between and just above the eyes, focusing on the expression, as in 「眉宇に表れる」.
• SynonymアイブロウNeutralA loanword for eyebrow makeup or an eyebrow pencil; confined to beauty and cosmetics contexts.

For everyday speech and idioms, use 「眉」, as in 「眉が太い」 or 「眉をひそめる」. Use 「眉毛」 for the hairs themselves, 「眉宇」 in literary writing about one's expression, and 「アイブロウ」 for makeup.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （まゆ）眉毛まゆげ。