IPA: /ˈwɪŋsprɛd/
KK: /ˈwɪŋˌsprɛd/
The distance from one tip of a bird's or insect's wings to the other when the wings are fully open.
The wingspread of the eagle was impressive as it soared through the sky.
Wingspread → It is formed from "wing" (from Old English "wenge", meaning the limb of a bird or insect used for flying) and "spread" (from Old English "sperdan", meaning to extend or stretch out). The word "wingspread" refers to the distance from one wingtip to the other when wings are fully extended.
Think of the 'wing' as the part of a bird that helps it fly, and 'spread' means to extend out. So, wingspread is the distance when a bird's wings are fully extended.