sub-level
[ suhb-lev-uh l ]
/ ˈsʌbˌlɛv əl /
noun Mining.
a drift, dug through ore, into which overlying material, especially from an upper layer of ore, is caved.
Words nearby sub-level
sub rosa,
sub verbo,
sub voce,
sub-,
sub-clause,
sub-level,
sub-machine-gun,
sub-post office,
sub-saharan,
sub-surface,
sub-zero