Usage: 4 forms in 5 verses
Form Translated As     In Verse(s)
βαλάνω acorn tree LXX.Judg.9.6
βαλάνου acorn LXX.Isa.2.13
βάλανοσ Acorn tree LXX.Gen.35.8
an acorn LXX.Isa.6.13
βάλανον acorn tree LXX.Gen.35.8

Liddell-Scott-Jones

βάλανος (balanos) a pin G:N-F

βάλανος [βᾰ], ,

acorn, [Refs 8th c.BC+]: any similar fruit, date, [Refs 5th c.BC+]; Διὸς β. see at {Διοσβάλανο; β. μυρεψική} bān, Balanites aegyptiaca, [Refs 4th c.BC+]

__2 tree which bears βάλανοι,[LXX+2nd c.BC+]
__II from similarity of shape,
__II.1 a sea shell-fish, barnacle, [Refs 4th c.BC+]
__II.2 glans penis,[Refs 5th c.BC+]
__II.3 air-vessel of a seaweed, bladder-wrack, Fucus vesiculosus, [Refs 4th c.BC+]
__II.4 iron peg, bolt-pin, [Refs 5th c.BC+]
__II.5 fastening for necklaces, [Refs 5th c.BC+]
__II.6 in Medicine texts, suppository, [Refs 5th c.BC+]
__II.6.b pledget, pessary, [Refs 5th c.BC+]
__II.7 ballot-ball, [Refs 4th c.BC+]. (Latin glans, Slav. želąδῐ, Lith. γὶλε ¯.)

LSJ Scripture Refs: LXX.Gen.35.8