ERECTILE
erectile, cavernous
(adjective) filled with vascular sinuses and capable of becoming distended and rigid as the result of being filled with blood; “erectile tissue”; “the penis is an erectile organ”
erectile
(adjective) capable of being raised to an upright position; “erectile feathers”
Source: WordNet® 3.1
Etymology
Adjective
erectile (not comparable)
Capable of being raised to an upright position.
Of tissue: capable of filling with blood and becoming rigid.
Source: Wiktionary
E*rect"ile, a. Etym: [Cf. F. Ă©rectile.]
Definition: Capable of being erected; susceptible of being erected of
dilated. Erectile tissue (Anat.), a tissue which is capable of being
greatly dilated and made rigid by the distension of the numerous
blood vessels which it contains.
Source: Webster’s Unabridged Dictionary 1913 Edition