Miter is the American spelling of mitre. British English writes mitre; the word is the same.

Miter is the American spelling of mitreMiter是mitre的美式拼法; British English writes mitre英式英文寫作mitre; the word is the same是同一個字

It has two lives that do not feel related until you look at the shape.

It has two lives這個字有兩種用法 that do not feel related乍看不太相關 until you look at the shape直到你看到形狀才會發現關聯

First, a miter is the tall, pointed hat a bishop wears in church — two peaks, front and back.

First第一, a miter is the tall, pointed hat a bishop wears in churchmiter是主教在教堂戴的那種高高尖尖的帽子 — two peaks, front and back前後各有一個尖角

Second, in building and woodwork, a miter is a corner joint where two pieces are cut at an angle, often 45 degrees, so they meet neatly, as in a picture frame. You can also use it as a verb: to miter the corners.

Second第二, in building and woodwork在建築和木工裡, a miter is a corner jointmiter是一種轉角接合方式 where two pieces are cut at an angle, often 45 degrees把兩塊料切成角度、通常是45度 so they meet neatly讓它們可以密合對接, as in a picture frame就像相框那樣. You can also use it as a verb也可以當動詞用: to miter the corners把邊角斜接起來

If you see miter on an American tool (“miter saw”), it is the woodworking sense.

If you see miter on an American tool如果你在美國的工具上看到miter (“miter saw”)（像「miter saw」斜切鋸）, it is the woodworking sense指的就是木工的那個意思

It is not a different word from mitre, and it is not “mightier” or “meter.”

It is not a different word from mitre它跟mitre不是不同的字, and it is not “mightier” or “meter.”也不是「mightier」或「meter」