noun · 1 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ˈdɑːlkə ˈɒnvəloʊp/
/ˈdɑːlkə ˈɛnvəloʊp/
1
noun
Meaning 1
An airmail envelope with a distinct pattern of spaced diamonds in alternating red and blue colours around the outer edge.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
After its designer Benjamin Dahlke. In use in the late 1920s, the name was patented in 1929.