/faɪl; faɪl/ n metal tool with a rough surface for cutting, smoothing or shaping hard substances 锉; 锉刀.

v
1 [Tn, Tn.pr, Cn.a] cut, smooth or shape (sth) with a file 用锉切削（某物）
*file one's fingernails 锉指甲
* file sth smooth 把某物锉光滑
* file an iron bar in two 把铁棒锉成两截.
2 (phr v) file sth down make sth smooth and smaller in size by using a file 将某物锉光滑、锉小.

/faɪl; faɪl/
n
1 (a) any of various types of drawer, shelf, holder, cover, box, etc, usu with a wire or metal rod for keeping loose papers together and in order, for reference purposes （存放文件、公文、卷宗、档案等的）抽屉、架子、夹子、封皮、箱子等
*I need another file for my letters. 我还需要一个存放信件的夹子.
(b) file and its contents 存放文件等的用具及其中的文件; 档案; 卷宗
*Where's the file of our recent correspondence? 我们近期的信件卷宗在哪里?
* have/open/keep a file on each member of staff 有[设立/保管]每个职员的档案.
2 organized collection of related data or material in a computer （计算机）文件
*I can't access the file on your company because I've forgotten the code. 我无法取出贵公司的文件, 因为我把代码忘了.
3 (idm 习语) on file kept in a file 存档; 归档
*We have all your particulars on file. 我们已把你的全部资料存档.

/faɪl; faɪl/
v
1 [Tn, Tn.pr, Tn.p] ~ sth (away) place sth in a file; store sth where it can be consulted 将某物归档
*file (away) letters in a drawer 把信件归档放入抽屉中.
2 [Tn] send (sth) so that it may be recorded 送交（某物）以便备案; 提交
*file an application for divorce 提交离婚申请书.

/faɪl; faɪl/
n
1 line of people or things one behind the other 排成行的人或物.
2 (idm 习语) (in) Indian/single `file (in) one line, one behind the other （成）单行. Cf 参看 the rank and file (rank1).

v [I, Ipr, Ip] ~ in, out, off, past, etc march or walk in the specified direction in a single line 排成单行沿某方向前进或行走
*The men filed onto the parade ground and past the general. 士兵们排成单行进入阅兵场自将军面前走过.

A CMD file is a file with a filename ending with .cmd or .