door pump (English, noun)
expansion: door pump (plural door pumps)
Senses:
glosses: A hydraulic device attached to a door in its one end and to the doorframe in the other, performing one or more of the following functions: a) dampening the movements of the door, b) making sure that the door closes properly, and c) assisting in opening it.
Forms:
form: door pumps
tags: plural