释义
n.
an area of land cleared for cultivation by slashing and burning vegetation
（割除和烧除植被后开出的）农田。
[mass noun]the method of clearing land in this way
割烧植被开垦农田的方法
-
the practice of swidden .割除烧去植被开垦农田的习俗。
v.
clear (land) by slashing and burning vegetation
（通过割烧植被）开垦（土地）。
词源
"late 18th cent. （as a verb, originally dialect）： variant of dialect