hearken or harken/ʹhahk(ə)n/ verb intrans (hearkened harkened) (hearkening harkening)

• bathrobe
• bathroom
• bath salts
• bathtub
• bathy-
• bathymeter
• bathyscaphe
• bathysphere
• batik
• batiste
• batman
• bat mitzvah
• baton
• baton charge
• baton round
• batrachian
• bats
• batsman
• battalion
• batten
• battenberg
• batten down the hatches
• batter
• battered
• battering ram