Unsupported titles/`num`

Symbol

 * 1)  The hash character.
 * 2)  A hashtag, which is a metadata tag for use in microblogging and social network services, used to label and search content.
 * 3)  Checkmate.
 * 4)  A fracture.
 * 5)  The cardinality of a set.
 * $$\# \{ 5, 3, 7, 11 \} = 4$$
 * 1)  Concatenation.
 * 2)  Apartness, a binary relation such that if a#b, then any other element c is apart from at least one of a,b. See.
 * #Jane is a great hostess and John is too.
 * #I slept a wink last night.
 * #Colorless green ideas sleep furiously.
 * 1)  Apartness, a binary relation such that if a#b, then any other element c is apart from at least one of a,b. See.
 * #Jane is a great hostess and John is too.
 * #I slept a wink last night.
 * #Colorless green ideas sleep furiously.
 * #I slept a wink last night.
 * #Colorless green ideas sleep furiously.

Etymology
The symbol derives from the abbreviation  for, via the medieval convention of indicating abbreviations with a bar,.

Noun

 * 1)  Pound (unit of weight).
 * 3# — "three pounds"
 * 1)  Number.
 * #3 — "number three"
 * 1)  Number.
 * 1)  Number.

Glyph origin
Likely from English.

Noun


Doppelkreuz (Zeichen) Titres non pris en charge/Croisillon