triple-space

[trip-uh l-speys]

verb (used with or without object), tri·ple-spaced, tri·ple-spac·ing.

to type (text, copy, etc.) so as to have two blank lines after each typed line.

Origin of triple-space

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019