IPA: /ˈbɜːrdˌbæθ/
KK: /ˈbɜrdˌbæθ/
A container filled with water where birds can drink and wash themselves.
The garden has a beautiful birdbath that attracts many colorful birds.
Birdbath → The word is formed from "bird" (from Old English "brid", meaning a young bird or chick) and "bath" (from Old English "baþ", meaning a washing or bathing). A birdbath is a place where birds can wash or bathe themselves.
Think of a 'young bird' ('bird') enjoying a 'washing' ('bath') — that's why a birdbath is a place for birds to bathe.
No commonly confused words.