Definition of bumpers:
(n) :
(automotive) Parts at the front and back of a vehicle which are meant to absorb the impact of a collision; fender.
(n) :
(colloquial, now chiefly attributive) Anything large or successful.
(n) :
Someone or something that bumps.
(n) :
Any mechanical device used to absorb an impact, soften a collision, or protect against impact.
(n) :
(cricket) A bouncer.
(n) :
(broadcasting) A short ditty or jingle used to separate a show from the advertisements.