What is "abuttal"

Abuttal \A*but"tal\, n. The butting or boundary of land, particularly at the end; a headland.
--Spelman.

n. 1 (context rare pluralonly English) The butting or boundary of land, particularly at the end; buttals. (First attested in the early 17^th century.)(R:SOED5: page=11) 2 An abutment. (First attested in the early 17^th century.) 3 The act of abutting.