kankyo
1. drain with an oblong cross-section
Noun
#524497
1. drain with an oblong cross-section
1. Of a box channel; Relating to a box channel
1. In the box channel; By the box channel
1. It is not a mailbox.; It is not a channel.
1. Was not a mailbox/channel.; Was not a duct/conduit.
1. Probably a flume.; Probably a channel.
1. If/when the channel/conduit…; If/when there was a channel/conduit…
1. Is not a mailbox.; Is not a letterbox.
1. If/when the channel…; Provided the channel…
1. Letter box.; Mailbox.