From Common Eldarin/Primitive Quendian banda ("prison, Hell"), from root BAD.
Sindarin
band
noun. prison, custody, duress, prison, custody, [N.] duress; [ᴱN.] hell
band
noun. duress, prison, custody, safe-keeping
angband
place name. Iron Prison
band
band
band
hell
1) band (i mand, o mband; construct ban) (custody, prison, safekeeping, duress, doom), pl. baind (i mbaind), coll. pl. bannath. 2) Udûn (= Utumno, stronghold of Melkor), pl. Uduin if there is a pl. (which is unlikely if Udûn is a proper name)
band
custody
band (i mand, o mband; construct ban) (prison, safekeeping, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
prison
1) band (i mand, o mband; construct ban) (custody, safekeeping, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath; 2) gador (i **ador) (dungeon), analogical pl. gedyr (i ngedyr = i ñedyr). Archaic gadr**.
band
duress
band (i mand, o mband; construct ban) (custody, prison, safekeeping, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
safekeeping
band (i mand, o mband; construct ban) (custody, prison, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
safekeeping
band (i mand, o mband; construct ban) (custody, prison, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
hell
(i mand, o mband; construct ban) (custody, prison, safekeeping, duress, doom), pl. baind (i mbaind), coll. pl. bannath.
band
doom
(i mand, o mband; construct ban) (custody, prison, safekeeping, duress, hell), pl. baind (i mbaind), coll. pl. bannath.
band
custody
(i mand, o mband; construct ban) (prison, safekeeping, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
prison
(i mand, o mband; construct ban) (custody, safekeeping, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath
band
duress
(i mand, o mband; construct ban) (custody, prison, safekeeping, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
band
safekeeping
(i mand, o mband; construct ban) (custody, prison, duress, doom, hell), pl. baind (i mbaind), coll. pl. bannath.
hemp
noun. band, bond; cord
amarth
doom
(noun) 1) amarth (fate), pl. emerth; 2) band (i mand, o mband; construct ban) (custody, prison, safekeeping, duress, hell), pl. baind (i mbaind), coll. pl. bannath. 3) manadh (i vanadh) (final end, fate, fortune [usually = final bliss]), pl. menaidh (i menaidh)
hebin
verb. I keep, I have kept
Because of the mutation triggered by the first person pronominal ending, it is impossible to guess whether the stem of this should be heb-, hab- or hob-. The root KHEP listed in VT/41:6 apparently implies that heb- is the correct form
lath
noun. (?) thong of leather
rîf
noun. bark
rîf
noun. bark
A word for “bark” (or possibly “skin”) appearing only in the name S. Fladrif “Skinbark” (LotR/474).
Conceptual Development: Earlier “bark” words include G. padhwen “bark” (GL/63) and G. dafros “bark, skin, peel” (GL/29) from the Gnomish Lexicon of the 1910s, G. {daus >>} dâf “bark” in Gnomish Lexicon Slips (PE13/112), and ᴱN. {gwath “bark” >>} gwadh “bark, skin, peel” in Early Noldorin Word-lists of the 1920s (PE13/146).
amarth
doom
(fate), pl. emerth
bartha
doom
(verb) bartha- (i martha, i mbarthar)
bartha
doom
(i martha, i mbarthar)
gador
prison
(i ’ador) (dungeon), analogical pl. gedyr (i ngedyr = i ñedyr). Archaic gadr.
gartha
keep
(defend) (i ’artha, i ngarthar = i ñarthar). Noun
heb
keep
(verb) 1) heb- (i chêb, i chebir) (retain); 2) gartha- (defend) (i **artha, i ngarthar** = i ñarthar). Noun
heb
keep
(i chêb, i chebir) (retain)
lath
thong
lath (pl. laith)
lath
thong
(pl. laith)
manadh
doom
(i vanadh) (final end, fate, fortune [usually = final bliss]), pl. menaidh (i menaidh)
nordh
cord
nordh (pl. nyrdh)
nordh
cord
(pl. nyrdh)
othrim
noun. army
thang
duress
thang (compulsion, need, oppression, tyranny), pl. theng if there is a pl.
thang
duress
(compulsion, need, oppression, tyranny), pl. theng if there is a pl.
udûn
hell
(= Utumno, stronghold of Melkor), pl. Uduin if there is a pl. (which is unlikely if Udûn is a proper name)
The fortress of Morgoth in the North, translated “Iron Prison” (WJ/15), a compound of ang “iron” and band “prison” (SA/ang, band).
Conceptual Development: The name G. Angband appeared in the earliest Lost Tales, but in these early stories it was translated “Hells of Iron” (LT2/77, GL/19). This translation persisted into Silmarillion drafts from the 1930s (SM/13, LR/259). However, N. Angband was translated “Iron Prison” in The Etymologies (Ety/MBAD), and this was the usual interpretation in Silmarillion revisions from the 1950s-60s (MR/305, WJ/15). Christopher Tolkien gave both translations in the Silmarillion Index (SI/Angband).