What is the meaning of Waag?

The grivet (an African monkey) - Chlorocebus aethiops.

weighing scales

place (building) where goods are weighed

wave

water flow, current

inflection of wagen:

1. first-person singular present indicative
2. (in case of inversion) second-person singular present indicative
3. imperative

first-person singular present indicative

(in case of inversion) second-person singular present indicative

imperative

wave

week

open; wide and clear (referring to a place)

cleared of obstructions that hinder clear viewing

wide, open field or space

state or condition of being wide-open and clear for viewing

Source: wiktionary.org