I. noun
Etymology: Middle English watergate, from water + gate (way)
chiefly Scotland : a natural channel for water : watercourse
II. noun
Etymology: Middle English watergate, from water + gat, gate gate (opening)
1. : a gate (as of private grounds or a building) giving access to a body of water
2. : a gateway or sluice for the passage of water ; also : a gate or valve controlling the flow of water : floodgate — compare gate valve
3. : a passageway for passage of traffic by water