noun
plural -ups
[count] :a small truck that has an open back with low sides - called also pickup truck;
the act of going somewhere to get a person or thing that you will then take to another place [noncount]
[count] :an increase in activity - usually + in
[noncount] US :the ability of a vehicle to increase speed quickly
[count] :a person you meet and have a usually brief sexual relationship with
[count] :a device on a musical instrument (such as an electric guitar) that makes sounds louder by changing them into electrical signals
[count] sports :a player who becomes part of a team after being obtained from another team
adjective
always used before a noun
US
organized informally with people who are available or nearby at the time
of or relating to the act of trying to meet strangers in order to have brief sexual relationships with them
US