noun
in (ball in play); inside the line
Sports term for a ball landing inside the boundary line, especially in tennis. Opposite of アウト.
See also: アウト
そのショットはインだった。
That shot was in.
expression
Used on signs, especially parking entrance signs, to indicate where to enter. Often seen as イン.
駐車場の入り口に「イン」と書いてある。
The parking lot entrance says 'IN'.
noun
back nine
Golf term for the second half of an 18-hole course. Opposite of アウト.
See also: アウト
今日はインでスコアを伸ばした。
I improved my score on the back nine today.
noun
inside lane
In track cycling, speed skating, etc., the lane closest to the inside of the track.
インを走る選手が有利だ。
The athlete running on the inside lane has an advantage.
noun
check-in time
Abbreviation of チェックイン. Used in contexts like hotel or flight check-in times.
See also: チェックイン
ホテルのインは午後3時からです。
Hotel check-in is from 3 p.m.
Borrowed from English 'in'. No explicit language of origin information is specified, but the word is clearly a loanword.