Biffy

//ˈbɪ.fi// noun, slang

noun, slang ·Uncommon ·College level

Definitions

Noun
  1. 1
    A toilet. US, slang
  2. 2
    An outhouse. US, slang

    "By a clever staggering of seats in each story, this model may be used either as a two-family biffie, or in place of the conventional set of two, without danger to either user. […] Constructed to withstand hard usage, this biffy is a three-holer on a nine-hole chassis and combines the utmost in sanitation […]"

Synonyms

All synonyms
kybokybo

Example

More examples

"By a clever staggering of seats in each story, this model may be used either as a two-family biffie, or in place of the conventional set of two, without danger to either user. […] Constructed to withstand hard usage, this biffy is a three-holer on a nine-hole chassis and combines the utmost in sanitation […]"

Etymology

Uncertain etymology, but perhaps an alteration of privy: p gaining voicing to become b, and v losing voicing to become f. Attested since 1935 (see first quotation).

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.