The noun boost has 3 senses (first 2 from tagged texts)
1. (3) boost, encouragement -- (the act of giving hope or support to someone)
2. (1) rise, boost, hike, cost increase -- (an increase in cost; "they asked for a 10% rise in rates")
3. boost -- (the act of giving a push; "he gave her a boost over the fence")
Overview of verb boost
The verb boost has 5 senses (first 4 from tagged texts)
1. (3) hike, hike up, boost -- (increase; "The landlord hiked up the rents")
2. (2) boost -- (give a boost to; be beneficial to; "The tax cut will boost the economy")
3. (1) promote, advance, boost, further, encourage -- (contribute to the progress or growth of; "I am promoting the use of computers in the classroom")
4. (1) boost, advance, supercharge -- (increase or raise; "boost the voltage in an electrical circuit")
5. boost -- (push or shove upward, as if from below or behind; "The singer had to be boosted onto the stage by a special contraption")