a weight used to counterbalance the weight of a sliding sash in a sash window and thus hold it in position at any height
sash weight in American English
noun
a counterweight to a vertically sliding window sash
Word origin
[1730–40]This word is first recorded in the period 1730–40. Other words that entered Englishat around the same time include: chenille, malaria, modernism, optimism, secret service
Examples of 'sash weight' in a sentence
sash weight
Ancient glass is thinner than modern glass, too, so the sash weights need to be adjusted if panes are replaced.