noun
escorted person; person under guard
Colloquial term used especially in police or security contexts for a person being escorted or guarded, such as a suspect or VIP.
警察はマルタイを裁判所へ連行した。
The police escorted the person under guard to the courthouse.
noun
ballast tamper; tamping machine
Railway industry slang, abbreviation of マルチプルタイタンパー. Used among workers for the machine that tamps track ballast.
See also: マルチプルタイタンパー
保線区ではマルタイが夜間に稼働している。
In the track maintenance section, the ballast tamper operates at night.