FYI, Terminal.app has an option to make Option work as the meta key, it's under Keyboard. Also, C-w deletes words. You can also hold option and click to move w

FYI, Terminal.app has an option to make Option work as the meta key, it's under Keyboard. Also, C-w deletes words. You can also hold option and click to move within the line, although unfortunately this doesn't work if you have Option assigned as the meta key.