Noun

(collies)

(British, dialect) Soot.

(Burton)

(British, dialect) A blackbird

(dated)

* {{quote-book

, year=1833 , author=William Craig Brownlee , title=The Whigs of Scotland: Or, The Last of the Stuarts, vol. 2 , page=30 citation , passage=Can a Whig lick the feet o' the tyrant wha usurps oor Lord's throne, and accept o' ane indulgence frae him, hurled to him as a bane to a colly dog , binding himself to think as he thinks, and to preach as he wulls it; and to flatter tyranny in church and state, to win a paltry boon!}}

* {{quote-book

, year=1847 , author=Thomas Miller , title=The Boy's Country Book , page=80 citation , passage=On the moors and mountains of Scotland the shepherd sends out his colly with the sheep, far out of his sight, conscious that when he sets out to look for them, they will be found herded safely together.}}

* {{quote-book

, year=1861 , author=Francis Galton , title=Vacation Tourists and Notes of Travel in 1860 citation , page=139 , passage=Colly dog's early training is a rude one, but I think that it is mutual, and that the shepherd picks up a good deal of dog during the process. , }}

Noun

(en noun)

A non-existent or empty value or set of values.

Zero]] quantity of [[expression, expressions; nothing.

(Francis Bacon)

Something that has no force or meaning.

(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.

(computing) the attribute of an entity that has no valid value.

Since no date of birth was entered for the patient, his age is null .

One of the beads in nulled work.

(statistics) null hypothesis