Meanings

cryptography

signal station

identity number

pedestrian crossing light

insurer number

branch code

bawling one's eyes out

license number

order number

telegraphic address

cable code

act number (within a year)

code point (in a character set)

this issue (of a periodical)

drawing number

order number

hand signal (to direct vehicular traffic)

signal issues

double issue (of a magazine, etc.)

model number