Wednesday Stimulation--Brain Teaser

photo courtesy of arte_ram

Here's your dosage of mental stimulation on this wet and dreary (at least here in the MD/DC metro area) "Hump Day."

Submitted by: cnmne

Each group of definitions describes three words that are spelled the same, except for one letter (each group describes a different set of words). Example: king, ring, wing. The length of the words in each group is provided.

1) a long step & a conflict or struggle & to hit sharply (6 letters)
2) medicinal ointment & a device that regulates flow through a pipe & to divide into two equal parts (5 letters)
3) not coarse & a musical instrument & a collection of papers (4 letters)
4) meager & sweet baked good & storage room for food (6 letters)

Click here for answer

Let me know how you do. If you'd like to submit a riddle, let me know.