abbr. Department of transport.

- —n. - a small spot or mark. B this as part of i or j, or as a decimal point etc.

- shorter signal of the two in morse code. —v. (-tt-) 1 a mark with dot(s). B place a dot over (a letter).

- (often foll. By about) scatter like dots.

- partly cover as with dots (sea dotted with ships).

- slang hit. dot the i's and cross the t's colloq. - be minutely accurate.

- add the final touches to a task etc. On the dot exactly on time. The year dot colloq. Far in the past. [old english]