Mammoth Uncensored Word List:
36 words ending with b, 7 letters long

bathtub bethumb blowjob brewpub corncob coulomb cowherb coxcomb decrumb dislimb disturb flubdub inqilab lulibub minicab minilab nashgab nosejob overdub paystub pedicab perturb potherb preverb proverb reclimb replumb rhubarb sanddab succumb taxicab trimtab unplumb upclimb washtub whoobub