Definition from Wiktionary, the free dictionary
Jump to: navigation, search



Clipping of frobnicate, from frobnitz, coined circa 1958 by David R. Sawyer of the MIT Tech Model Railroad Club (TMRC).[1] Year of origin uncertain, and could be 1958–1981: frob is not listed in the TMRC dictionaries of 1959 or 1960,[2] and is first listed in the Jargon File (1981 edition), so it may date from the 1960s or 1970s. Possibly variant of or influenced by frotsus ‎(a protruding arm or trunnion), which is listed in TMRC 1959 and 1960.


frob ‎(plural frobs)

  1. (jargon, MIT) Any small device or object (usually hand-sized) which can be manipulated.
    Hand me that frob there, will you?


frob ‎(third-person singular simple present frobs, present participle frobbing, simple past and past participle frobbed)

  1. (jargon, MIT) To manipulate objects considered to be frobs.
    Hey, frob the switch.
  2. (jargon, MIT) To manipulate equipment without any knowledge.
    Hey! Stop frobbing that oscilloscope! You'll break it.

Usage notes[edit]

Sometimes contrasted with twiddle and tweak: frob for aimless manipulation, twiddle for coarse manipulation, and tweak for fine manipulation.[1]

Related terms[edit]

See also[edit]


  1. 1.0 1.1 "frobnicate" in the Jargon File
  2. ^ Peter Samson, AN ABRIDGED DICTIONARY of the TMRC LANGUAGE June 1959 (with 2005 commentary), AN ABRIDGED DICTIONARY of the TMRC LANGUAGE late summer/early fall 1960 (with 2005 commentary)