Yes, foot is a Scrabble word!

Verb

1. Pay for something

2. Walk

3. Add a column of numbers

Noun

1. The part of the leg of a human being below the ankle joint

2. A linear unit of length equal to 12 inches or a third of a yard

3. The lower part of anything

4. The pedal extremity of vertebrates other than human beings

5. Lowest support of a structure

6. Any of various organs of locomotion or attachment in invertebrates

7. Travel by walking

8. A member of a surveillance team who works on foot or rides as a passenger

9. An army unit consisting of soldiers who fight on foot

10. (prosody) a group of 2 or 3 syllables forming the basic unit of poetic rhythm

11. A support resembling a pedal extremity