Bike Seat And Post

bike
motorcycle: a motor vehicle with two wheels and a strong frame
A bicycle or motorcycle
bicycle: a wheeled vehicle that has two wheels and is moved by foot pedals
bicycle: ride a bicycle

seat
A sitting place for a passenger in a vehicle or for a member of an audience
a space reserved for sitting (as in a theater or on a train or airplane); "he booked their seats in advance"; "he sat in someone else's place"
A thing made or used for sitting on, such as a chair or stool
The roughly horizontal part of a chair, on which one's weight rests directly
show to a seat; assign a seat for; "The host seated me next to Mrs. Smith"
be able to seat; "The theater seats 2,000"

post
Announce or publish (something, esp. a financial result)
(of a player or team) Achieve or record (a particular score or result)
affix in a public place or for public notice; "post a warning"
Display (a notice) in a public place
the position where someone (as a guard or sentry) stands or is assigned to stand; "a soldier manned the entrance post"; "a sentry station"
military post: military installation at which a body of troops is stationed; "this military post provides an important source of income for the town nearby"; "there is an officer's club on the post"