This is the 'dibs' verb. When you see the last piece of pizza and shout 'Akin 'yan!', you're trying to 'mag-angkin'. It can be about physical things (claiming land), abstract concepts (claiming a title), or even feelings, like that 'hugot' line, 'Huwag mong angkinin ang isang taong hiniram mo lang.' (Don't claim someone you only borrowed).