1670s, "clasp, buckle, brooch," from Latin fibula "clasp, brooch; bolt, peg, pin," related to figere "to drive in, insert, fasten" (from PIE root *dheigw- "to stick, fix"). In reference to brooches, the modern English word mostly is used in archaeology. As "smaller bone in the lower leg" from 1706, from a Latin loan-translation of Greek perone "small bone in the lower leg," originally "clasp, brooch; anything pointed for piercing or pinning;" the bone was so called because it resembles a clasp such as that found in a modern safety pin. Related: Fibular.
Proto-Indo-European root meaning "to stick, fix."
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit dehi- "wall;" Old Persian dida "wall, stronghold, fortress," Persian diz; Latin figere "to fix, fasten, drive, thrust in; pierce through, transfix;" Lithuanian dygstu, dygti "germinate;" Old Irish dingid "presses, thrusts down;" Old English dic "trench, ditch," Dutch dijk "dam."
"to clasp, confine with a buckle, ring, clasp, or the like," especially of the sexual organs, to prevent copulation, 1620s, from Latin infibulatus, past participle of infibulare "to close with a clasp," from in- "on" (from PIE root *en "in") + fibula "a clasp, pin" (from PIE root *dheigw- "to stick, fix"). Related: Infibulated.
This operation was very generally practised in antiquity upon both young men and young women, but in later times chiefly upon the latter; and it is said to be still in use in some parts of the East. [Century Dictionary, 1902]