Updated list:
You guys are doing pretty good
1. Boxing.
2. Niagara Falls. The rim is worn down about two and a half feet each year because of the millions of gallons of water that rush over it every minute.
3. Asparagus and rhubarb.
4. Baseball.
5. Strawberry.
6. The pear grew inside the bottle. The bottles are placed over pear buds when they are small, and are wired in place on the tree. The bottle is left in place for the whole growing season. When the pears are ripe, they are snipped off at the stems.
7. Dwarf, dwell, and dwindle.
8. Period, comma, colon, semicolon, dash, hyphen, apostrophe, question mark, exclamation point, quotation marks, brackets, parenthesis, braces, and ellipses.
9. hehehe
10. Batter hit by a pitch; passed ball; catcher interference; catcher drops third strike; fielder's choice; and being designated as a pinch runner.
11. Lettuce.
12. Shoes, socks, sandals, sneakers, slippers, skis, snowshoes, stockings, swimfins.
I'm assuming that passed ball and balk are the same thing.
And that leaves number 9