One way to hold this word: a name that keeps sliding along the table. It starts as a bottle — an Italian brand of called Martini. Then it names the cold, strong drink mixed from that with gin or vodka. Then the narrow, cone-shaped glass becomes so famous that the glass alone carries the name, and almost anything poured into it gets called a martini too.
Wiktionary records that Martini is an Italian name used by the vermouth company Martini & Rossi, and that the cocktail name was coined in America in the 19th or 20th century, with several competing explanations — perhaps the vermouth brand, perhaps the town of Martinez in California, perhaps a bartender of that name.
來源證據指出：Martini 是義大利姓氏，苦艾酒公司 Martini & Rossi 用它當品牌名；而「調酒」這個意思是十九或二十世紀在美國出現的，說法不只一種——可能來自這個苦艾酒品牌，可能來自加州的 Martinez，也可能來自某位姓 Martini 的調酒師。哪一種都還沒有定論。
Wiktionary (packet evidence), entry Martini, etymology 2: source_ref kaikki:3f6f69a190036ae4:1259176953
Two branches
那瓶苦艾酒
這是名字最早待的地方。品牌先存在，杯子和調酒的名字才跟著出現，所以它是整條線的起點，而不是從調酒分出來的支線。
noun · C1
A well-known Italian brand of vermouth, which is wine flavoured with herbs. Written with a capital M, and often used as the name of the drink itself, not of a mixed cocktail.
馬丁尼（苦艾酒品牌）
那杯調酒，還有那個杯子
名字從瓶子走到杯子。先是「用那瓶苦艾酒調的酒」，再變成「用那個杯子裝的酒」，重點一路從配方移到外型。
noun · B2
A strong mixed drink made with gin or vodka and a small amount of vermouth, served cold, usually in a wide cone-shaped glass with a thin stem.
馬丁尼