Noah Webster
Palpable
PAL'PABLE, adjective [Latin palpor, to feel.]
1. Perceptible by the touch; that may be felt; as a palpable substance; palpable darkness.
2. Gross; coarse; easily perceived and detected; as a palpable absurdity.
3. Plain; obvious; easily perceptible; as palpable phenomena; palpable proof.