Meanings

hand signal (to direct vehicular traffic)

signal issues

automatic sending (of email, etc.)

freedom of religion

prestige goods

social credit system (China)

(crime of) opening sealed correspondence

(crime of) opening sealed correspondence

distributor (of information, content, etc.)

flare gun

bulk mailing

simultaneous transmission

heliogram

to believe in each other

live stream

transmission of a sonar pulse

correspondence delivery (via a private courier service)

(active) sonar

radar

group credit life insurance