A spot or stain of ink or other colored liquid.

• A smudge or mark on paper or fabric.

A disgraceful mark on someone's reputation.

• A cause of shame or discredit.

A lab method transferring proteins, DNA, or RNA to a membrane.

• Used for detection after electrophoresis, as in Western blot.

In backgammon, a single checker left exposed.

• A point vulnerable to being hit.

To mark or stain with ink or other liquid.

• To cause a blot on a surface.

To soak up liquid by dabbing; to absorb.

• To dry writing with blotting paper.

To erase or obscure, often with ink; blot out.

• To remove from memory or view.

In backgammon, to hit an opponent's exposed single checker.

• To send that checker to the bar.