FILCH (verb) definition and synonyms | Macmillan Dictionary.

Is filch a verb or noun?

As a noun, filch once referred to a hooked staff used by thieves to snatch articles out of windows and from similar places, but this use is now obsolete.

Is filch a slang?

verb steal, take, thieve, pinch (informal), lift (informal), nick (slang, chiefly Brit.), trouser (slang), abstract, rip off (slang), cabbage (Brit.