1. plug, stopper

a. pad (for a flute, saxophone) (music)

b. (for closing a leak) (nautical)

2. swab (medicine)

3. tampon (menstrual product)

4. sponge, pad (piece of porous material)

a. used for washing

b. to varnish or apply wax to a piece of furniture

c. to apply ink

5. stamp

6. mitigator, mediator, buffer between people having a dispute (figuratively)

a. In this sense, often used in apposition, such as in solution tampon, État tampon, zone tampon, etc. (figuratively)

7. buffer (chemistry)

8. buffer (computing)

9. buffer (rail transport)