pump bob
noun
: a bell crank or similar device for converting rotary into reciprocating motion
Word History
Etymology
pump entry 1
- threshed
- threshels
- thresher
- thresher shark
- thresher whale
- thresherman
- threshermen
- threshers
- threshes
- threshing
- threshing floor
- threshing machine
- threshings
- threshold
- threshold exposure
- threshold frequency
- thresholded
- thresholding
- thresholds
- threskiornes
- threskiornises
- threskiornisses
- Threskiornithidae
- threskiornithidaes
- threw