Wine是一个在x86、x86-64上容许类Unix操作系统在X Window System下运行Microsoft Windows程序的软件。另一方面，电脑程序员能经由Wine的程序库将窗口的程序转移至类Unix操作系统中运行。也有不少软件经过Wine测试后发布，比如Picasa，uTorrent，MediaCoder。

虽然Wine有另一个非官方名称，"Windows Emulator"，即Windows仿真器，但Wine其实为"Wine Is Not an Emulator"的递归缩写，即Wine不是仿真器。Wine的正确名称是"Wine"，不是全大写或全小写。

Wine (recursive acronym for Wine Is Not an Emulator) is a free and open source compatibility layer software application that aims to allow applications designed for Microsoft Windows to run on Unix-like operating systems. Wine also provides a software library, known as Winelib, against which developers can compile Windows applications to help port them to Unix-like systems.