Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"As Cincinnati’s largest neighborhood, these energetic triangles represent an upward momentum.
Three leaves that represent the diverse flora within Westwood, initially stewarded by James Gamble himself.

Taking its colors from the old streetcars that ran through Westwood, these arcs represent East/West thoroughfares in the city."
Own work using: https://www.cincyflags.com/cuf
CincyFlags