soffit noun. ['sɒfɪt] E17.
[French soffite or Italian soffitto, -itta, ult. from Latin suffixus: see SUFFIX noun.]
The underside of any architectural structure, as an arch, balcony, cornice, vault, etc.; spec. (the undersurface of) a board nailed to the underside of rafters under overhanging eaves. Now also, the uppermost part of the inside of a drainpipe, sewer-pipe, etc.

[TahlilGaran] English Dictionary ▲