eaves

Etymology 1

PIE word *upér in Barcelona, Spain.]] From Middle English eves (“projecting lower edge of a roof”) [and other forms], from Old English efes, yfes, *ofes (“edge of a roof”), from Proto-West Germanic *ubisu (“hall”), from Proto-Germanic *ubiswō (compare Gothic 𐌿𐌱𐌹𐌶𐍅𐌰 (ubizwa), Old High German obasa (“hall; porch; roof”)), perhaps ultimately from Proto-Indo-European *upér (“above; over”) (whence over).

noun

1. (architecture) The underside of a roof that extends beyond the external walls of a building.
2. (by extension) Something that extends over or projects beyond.

Etymology 2

From eave + -s, from a misinterpretation of the -s ending of eaves as forming a plural.

noun

1. plural of eave