Bul
Bul meaning: Old age, perishing.
Bul origin: Biblical
Bul gender: Male

Bulbul
Bulbul meaning: The nightingale.
Bulbul origin: Arabic
Bulbul gender: Female

Bullcalf
Bullcalf meaning: 'King Henry IV, Part 2' Peter Bullcalf, a country soldier.
Bullcalf origin: Shakespearean
Bullcalf gender: Male