The term "pickup" has multiple meanings, depending on its context.
1) In a general sense, it can refer to an act of picking something up or collecting something that is already present in a particular location. For example, one might say "I need to do some pickups around the house." This means they need to gather things that are lying around their home.
2) In a musical context, it refers to the sound produced by an electric guitar when its signal is amplified through a loudspeaker or other audio system. The term comes from the fact that when you turn up the volume on an electric guitar, the sound "picks up" and becomes louder.
3) In a dating context, it refers to the act of meeting someone for the first time with the intention of starting a romantic relationship. For example, one might say "I'm going out tonight to do some picking up." This means they are planning on meeting new people and potentially forming relationships.
4) In sports, particularly basketball, it refers to an act of stealing the ball from an opponent during play. A player may "pick up" a loose ball or intercept a pass in order to take possession of the ball for their team.