Definition of "in-line"

Consisting of parts arranged in a single line.  examples

(engineering, of an internal-combustion engine) Having all cylinders in a single straight line; straight.  examples

(writing) Inserted in the flow of a text.  examples

(computing, of source code) Of a different language than the outer enclosing code.  examples

(web design, Cascading Style Sheets) Of a style: inserted in the style attribute of an HTML element instead of in a separate stylesheet.  quotations  examples