coun·ter·weight 
(kountər-wāt′)
(kountər-wāt′)n.
1. A weight used as a counterbalance.
2. A force or influence equally counteracting another.
counter·weight′ed (-wā′tĭd) adj.
- metallo-
- metallographer
- metallographic
- metallographically
- metallography
- metalloid
- metallophone
- metallurgic
- metallurgical
- metallurgically
- metallurgist
- metallurgy
- metalmark
- metalware
- metalwork
- metalworker
- metalworking
- metamaterial
- metamathematical
- metamathematician
- metamathematics
- metamere
- metameric
- metamerically
- metamerism