brb

As an initialism brb

is (be right back).

As a noun bob is

broad bean, horse bean.

As a noun burb

is short form of suburb.

As an initialism BRB is

(I'll) be right back.

As a noun brob

is a wedge-shaped spike used to secure the end of a timber where it abuts another much used in earlier times in the construction of tunnelled box-timber headings.

As a verb brob

is (obsolete) to poke or prick.

As an initialism brb is

(be right back).

As initialisms the difference between brb and orb

is that brb is (be right back) while orb is (software engineering).

As a noun bab

is dummy.

As an initialism brb is

(be right back).

As a noun bib

is an item of clothing for babies tied around their neck to protect their clothes from getting dirty when eating.

As a verb bib

is (archaic) to drink heartily; to tipple.

As an initialism brb is

(be right back).

As a noun bra

is captive, hostage.

As an initialism brb is

(be right back).