arierbec Noun, n, arierbec

1. the downstream part of the cutwater of a bridge

Appox. usage (any sense): less than 0.1 per million words

avantbec Noun, n, avantbec

1. cutwater (the wedge of a bridge pier, that resists the flow of water and ice.)

Appox. usage (any sense): less than 0.1 per million words