2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Impassable \Im*pass"a*ble\, a. [Cf. {Unpassable}.]
Incapable of being passed; not admitting a passage; as an
impassable road, mountain, or gulf. --Milton. --
{Im*pass"a*ble*ness}, n. -- {Im*pass"a*bly}, adv
From WordNet r 1.6 [wn]:
impassable
adj : impossible to pass [syn: {unpassable}] [ant: {passable}]
more about impassable
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