It's a coloured xylograph, single-leaf prints from about 1450. From Wordnik.com. [Archive 2009-06-01] Reference
Salmon Bay Bridge,1914, 200 foot opening span, single-leaf bascule bridge. From Wordnik.com. [Build Blog » Dynamic Bridges] Reference
The certificates pertain to British Standard 476 (Part 22) and apply to single-leaf and double-leaf doors. From Wordnik.com. Reference
Thus, Javellina, the single-leaf hedge-rose, is associated with lines indicative of "the sweet purity of youth.". From Wordnik.com. [Another World Fragments from the Star City of Montalluyah] Reference
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