IPA: /ˈkɒkspɜːr/
KK: /kɑkspɜr/
A type of thorny shrub or the sharp projection on the leg of a male chicken used for fighting.
The gardener planted a cockspur to add some unique texture to the landscape.
Cockspur is formed from "cock" (from Old English "coc", meaning rooster) and "spur" (from Old English "spear", meaning a pointed device used to urge a horse forward). The word refers to a type of thorn or projection resembling a rooster's spur.
Think of a 'rooster' ('cock') with its 'pointed device' ('spur') — that's why a cockspur resembles a rooster's spur.
No commonly confused words.