Short for 機動捜査隊 (kidō sōsatai, “Mobile Investigation Unit”)

express (quick mode of transportation, particularly of trains)

member, a person who is in a group / participant, attendee at an event / (programming) member in object-oriented programming / (Internet slang) suspect in a crime

actual spot / factory floor, workplace

search / look for / seek / look into / investigate / explore

a loom / woven cloth

(law) a crime; an act that breaks law

(sports) member of a starting lineup

limited express train; special express

crime scene