Eagre is a term used to describe a tidal BORE, which is a large wave that is created when the tide of an ocean or sea enters a shallow river. It is also known as a tidal surge or a tidal wave. The eagre is caused by the difference in water levels between the ocean and the river, and it can cause flooding in the area. The term eagre is derived from the Old English word 'eagor, ' which means 'FLOOD.' The crossword solutions for eagre are FLOOD (5 letters) and BORE (4 letters).