installer
noun [ C ] uk/ɪnˈstɔː.lər/ us/ɪnˈstɑː.lɚ/
(SOFTWARE)
（计算机软件的）安装程序
software that tells your computer how to copy a program from a disk onto the computer
Just pop the CD into your computer and start the installer. 只要把光盘放进你的电脑，然后启动安装程序就行了。
(PERSON)
（家具、设备、机器等的）安装人员
someone whose job is to put furniture, equipment, a machine, etc. into the correct position and make it ready to use
a carpet installer 铺地毯的人
a cable television installer 有线电视安装人员