Torihada (鳥肌 - Goose Bumps)

Torihada

A phenomenon that a lot of fine bumps appear on a person's skin due to cold, fear, or discomfort is called 'torihada' (鳥肌) in Japanese.

Since 'tori' (鳥) means "bird" and 'hada' (肌) means "skin," the literal meaning of 'torihada' is "bird's skin."

As you can easily guess, this name comes from the fact that the skin with fine bumps is similar to the skin of a bird with feathers removed.

It is often idiomatically used as 'torihada ga tatsu' (鳥肌が立つ) by adding 'tatsu' (立つ - "to rise").

鳥肌

寒さや恐怖、不快感などで、肌に大量の細かい突起が出る現象や、その肌のことを「鳥肌」と言います。

「鳥」は "bird"、「肌」は "skin" を意味するので、「鳥肌」の文字どおりの意味は "bird's skin" となります。

この名称は、細かい突起が出た肌が、羽をむしり取られた鳥の肌と似ていることに由来します。

慣用的に、"to rise" を意味する「立つ」を使って「鳥肌が立つ」と言うことが多いです。