### Find the word definition

##### Wiktionary
vertical bar

n. 1 (context computing English) The ASCII character at the decimal position of 124, depicted as (unsupported: pipe) or ¦; 2 (context mathematics English) represents an absolute value (e.g. $|x|$) 3 (context mathematics English) norms (e.g. $||\left(x_1,x_2\right)||$) 4 (context mathematics English) set definitions (e.g. $\left\{x|x\right) 5 \left(context mathematics English\right) conditional probability \left(e.g.P\left(X|Y\right)\right) 6 \left(context mathematics English\right) divisibility \left(e.g.a | b\right) 7 \left(context computing English\right) \left(non-gloss definition: a symbol which, in Unix, is used as a pipe\right) 8 \left(context computing English\right) \left(non-gloss definition: a symbol which, in regular expressions, indicates an alternation\right)$

##### Wikipedia
Vertical bar

The vertical bar ( | ) is a computer character and glyph with various uses in mathematics, computing, and typography. It has many names, often related to particular meanings: Sheffer stroke (in logic), verti-bar, vbar, stick, vertical line, vertical slash, bar, obelisk, or pipe. On a QWERTY keyboard, the combination of the "shift" key and the backslash "\" key outputs the character "|". Other keyboard layouts may use different combinations to output the vertical bar.