Glebe: Soil or farm land. Now used primarily in poetry. Once, the cultivable land belonging to, and used for the support of, a parish church.
www.mises.org/easier/G.asp

Grebe:small compact-bodied almost completely aquatic bird that builds floating nests; similar to loons but smaller and with lobate rather than webbed feet
www.cogsci.princeton.edu/cgi-bin/webwn

Terrapin: any of various edible North American web-footed turtles living in fresh or brackish water
www.cogsci.princeton.edu/cgi-bin/webwn

The terrapin sings to the grebe
Upon the pastor's ancient glebe
An' makes mah sorry chest to heab....