lavatory

The word 'lavatory' has a transparently functional origin, directly derived from the Latin verb lavāre, meaning 'to wash'. The suffix -ōrium was commonly appended to verb stems in Latin to create nouns indicating a location associated with that action, such as laboratorium (a place for work). Thus, the literal meaning of lavātōrium was 'a place for washing'. While its primary modern sense refers to a room containing a toilet, the core historical link to washing remains evident in the fixture for handwashing that is central to such a room. This semantic evolution from a general washing place to a specific sanitary facility reflects changes in domestic architecture and social norms.

Structure: lavat (wash) + ory (place for) - lavat: From Latin lavāt-, the stem of lavāre (to wash). Functions as the verbal root. - ory: From Latin -ōrium, a suffix forming nouns denoting a place for a specific function. Functions as a noun-forming suffix.