something that gives someone more confidence, or that helps something increase, improve, or become successful
a major boost to the economy
a multi-million pound boost for the British film industry
Add a little more vanilla, to give the flavor a boost.
get/receive a boost
The community will get a boost from a new library and recreation center.
The poll provided a morale boost for the Conservatives.
to lift someone so that they can reach a higher place:
If I give you a boost, could you reach the window?
an increase in the amount of power available to a rocket, piece of electrical equipment etc