CB, an abbreviation for 'Citizens' Band', is a range of radio frequencies which the general public is allowed to use to send messages to each other. It is used especially by truck drivers and other drivers who use radio sets in their vehicles.
cb in British English
abbreviation for
centre of buoyancy (of a boat, etc)
Cb in British English
the chemical symbol for
columbium
CB in British English
abbreviation for
1.
Citizens' Band
2.
Companion of the (Order of the) Bath (an English title)
3.
County Borough
4.
(in Canada) Cape Breton Island
CB in American English1
(ˈsiˈbi)
adjective
1.
designating or of shortwave radio that has citizens' band frequencies
nounWord forms: pluralCB's
2.
a shortwave radio using citizens' band frequencies