初しょ便びん

noun

first flight; maiden voyage

Refers to the inaugural flight of an airline route or the first voyage of a ship. Often used in travel contexts.

• 新しん路ろ線せんの初しょ便びんは満まん席せきだった。

  The first flight on the new route was fully booked.

noun

first letter; first correspondence

Used for the first letter or message in an exchange, such as a pen-pal relationship or business correspondence. Less common than sense 1.

• 文ぶん通つうの初しょ便びんを書かくのは少すこし緊きん張ちょうする。

  Writing the first letter in a correspondence makes me a little nervous.