What is the meaning of Bầu?

bottle gourd

Lagenaria siceraria (calabash vine, bottle gourd)

Any plant of genus Lagenaria

Various varieties of Oryza sativa rice that are usually planted as lúa Chiêm in deep paddies, and are relatively colorful, rather strong, and can be planted in paddies high in alum, for red rice or low-quality rice.

gourd (hard-shelled fruit from a plant in Lagenaria)

gourd (dried and hardened shell of a gourd fruit)

ovary (lower part of a pistil or carpel that bears ovules)

rootball

bulbous bow; bulbous stern

bosom (seat of one's inner thoughts, feelings, etc.)

womb; baby bump

a space of something

pregnancy

pregnant

bulging, plump

to be pregnant

to vote

to elect

Source: wiktionary.org