main

[1]	briny
[2]	pipe , duct , channel , line , pipeline , water/gas main , (Brit) (electric) cable , mains , power (supply) , conduit
[3]	strength , power , might , effort , energy , vigour
[4]	in the main

adj.

[1]	chief , primary , prime , (most) important , principal , cardinal , paramount , first , foremost , leading , pre-eminent , predominant , predominating , dominant , ranking , major , outstanding
[2]	largest , biggest , greatest , strongest
[3]	necessary , chief , primary , essential , basic , principal , master , particular , fundamental , critical , crucial , vital
[4]	sheer , independent , brute , utter , pure , out-and-out , absolute , mere , plain