noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   The amount of liquid that fills a certain length of pipeline. uncountable, usually
2. 2
   substance that fills a pipeline to ensure a continuous flow of product. uncountable, usually

Etymology

From line + fill.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.