small round mark 小圆点: Join the dots up to complete the drawing. 顺点连线把图画好. 
such a mark used as a symbol in writing (eg above the letters i and j), mathematics (eg the decimal point), music, representing a short sound in Morse code, etc 字母上的点（如i和j上的）; 小数点; 音乐符号上的点; 摩尔斯电码代表短音的点. =>App 3 见附录3. 
anything resembling a dot; a small quantity 点状物; 少量, 微量, 一点儿: The island was just a dot on the horizon. 该岛只是天水交接处的一个黑点. * I like just a dot of milk in my tea. 我喜欢在茶里稍掺一点牛奶. 
(idm 习语) on the `dot (infml 口) exactly on time, or at the time specified 准时地; 在指定的时刻: He's very punctual always arrives on the dot. 他很守时--总是按时到. * leave at 5 o'clock on the dot/on the dot of 5 o'clock 准於五点整离开. the year dot => year.> dot v (-tt-)
1 [Tn] mark (sth) with a dot 以小圆点标出（某物）.
2 [esp passive 尤用於被动语态: Tn.pr, Tn.p] place (things or people) here and there; scatter 将（物或人）分布各处; 分散: The sky was dotted with stars. 天空繁星密布. * We've dotted a few chairs about. 我们在周围放了几把椅子.
3 [Tn, Tn.pr, Dn.n](infml 口) hit (sb) 打, 击（某人）: He dotted me in the eye. 他击中了我的眼睛. * Shut up or I'll dot you one! 闭嘴, 要不我就揍你!
4 (idm 习语) dot one's/the ,i's and cross one's/the `t's complete the final details of a task 一丝不苟地完成任务.
# ,dot `matrix (computing 计) grid of dots used to form letters, numbers, etc in printing 点阵（印刷中用以组成字母﹑ 数字等的矩阵）: [attrib 作定语] a ,dot matrix `printer 点阵打印机.
dotted `line 1 line of dots showing where sth is to be written on a document, form, etc 点线; 虚线. 2 (idm 习语) sign on the dotted line => sign2.