Center letter: t
Outer letter: a b h i n o
Answers (58):
  habitation
  inhabitation
  abbot
  annatto
  annotation
  anoint
  anti
  attain
  baht
  bait
  bath
  baton
  biota
  biotin
  boat
  bonito
  boot
  booth
  both
  habit
  habitat
  hath
  hatha
  hint
  hobbit
  hoot
  inhabit
  inhabitant
  inhibit
  inhibition
  initiation
  into
  intonation
  iota
  nanobot
  natant
  nation
  ninth
  notation
  notion
  oath
  obit
  obtain
  onto
  taboo
  tahini
  taint
  tannin
  tattoo
  than
  that
  thin
  tibia
  tint
  titan
  toon
  toot
  tooth