-ˌād.ə(r), -ātə- noun
( -s )
1. : one that delineates
2.
a. : a surveying odometer that records distances and delineates a profile (as of a road)
b. : a person who makes perspective drawings from an architect's plans
c. : a row of light reflectors mounted on posts especially on curves along the edge of a highway to guide traffic at night