Eagre n. : A wave, or two or three successive waves, of great height and violence, at flood tide moving up an estuary or river; -- commonly called the bore. See Bore.

Example:
i am very Eagre to know what i suppose to feel when my baby's moving?

Taxonomy
Eagre, World Wide Words, bore, e-magazine, weird words, travels, shallows, River Severn, phenomenon, on the River, tules, river bore, tidal wave, single wave, high tide, solitary wave, English dialect, Etymology.

Defination from the web:
... A large wave like an eagre, diverging from its bow, was extending to either bank, swamping the tules and threatening to submerge the lower levees. ...