1. Mail consisting of large numbers of identical items (circulars or advertisements) sent to individual addresses at less than 1st-class rates and paid for in one lot

Type of: mail

Encyclopedia: Bulk mail

• switch grass
• switch off
• switch on
• switch over
• switch-hit
• switch-hitter
• switch-ivy
• switchback
• switchblade
• switchblade knife
• switchboard
• switchboard operator
• switcher
• switcheroo
• switching
• switchman
• swither
• Switzerland
• swive
• swivel
• swivel chair
• swivel pin
• swivet
• swiz
• swizz