Span-new Definition

spănno͝o, -nyo͝o

adjective

Perfectly new.

Webster's New World

Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.

Wiktionary

Origin of Span-new

Middle English spannewe partial translation of Old Norse spānnȳr spānn shingle, chip nȳr new newo- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition
From Icelandic, properly meaning "as new as a ship just split".

From Wiktionary