Pear
The grain you cut off a tree with a knife is a pear. You've found some particularly big, sturdy ones, which is why you need the help of your knife. These pears are sure to be super juicy and delicious, but you need some extra tools to get them off the tree.
り
なし
None
As you cut the pears down, you can't help but gnash (なし) your teeth. You want to eat these pears right now. You gnash and grind and wait though, because you want to have them all down before you start the feast.