PEN'ETRABLE, adjective [Latin penetrabilis. See Penetrate.] 1. That may be penetrated, entered, or pierced by another body. Let him try thy dart, And pierce his only penetrable part. 2. Susceptible of moral or intellectual impression. I am not made of stone, But penetrable to your kind entreaties.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI