Bifilar

1 clue
Having two threads
Similar answers:
Aguilar
Alilarter
Basilar
Bif
Biface
Bifara
Biff
Biffed
Biffhenderson
Biffs
Bifid
Bifilar
Bifocal
Bifocallens
Bifocals
Bifold
Biform
Bifurcate
Bifurcates
Debbifields