The phrase "clip a" is ambiguous and lacks a standard, widely recognized meaning without additional context. To understand what "clip a" means, I need more information. Here are some possibilities depending on the context:

• Clipping an object: It could refer to using a tool or mechanism to fasten or attach something. For example, using a clip to attach a document.
• Audio/Video Editing: In the context of audio or video editing, "clip a" might relate to selecting or marking a portion of a sound or video file to be extracted or edited.
• Digital Art/Image Editing: It might refer to using a clipping mask to constrain an image or effect to a specific shape or area.
• Slang/Informal Usage: It could be slang.