I use this tool daily and I believe it is called a 'Butter Pick, One Tine ' to spear butter pats or curls from the butter dish onto the plate perhaps some of us could use it as a toothpick.
Well done Oel, that is correct. It is a butter picker. You can pick or serve small "butter balls" with it. I never seen one before when I stumbled into this one. I just had to buy it.