dot

A small, round spot.

"a dot of colour"

(grammar) A punctuation mark used to indicate the end of a sentence or an abbreviated part of a word; a full stop; a period.

A point used as a diacritical mark above or below various letters of the Latin script, as in Ȧ, Ạ, Ḅ, Ḃ, Ċ.

To cover with small spots (of some liquid).

"His jacket was dotted with splashes of paint."

To add a dot (the symbol) or dots to.

"Dot your is and cross your ts."

To mark by means of dots or small spots.

"to dot a line"

Dot product of the previous vector and the following vector.