Rare but attested verb meaning ‘to furnish with or as if with a fortress; to fortify’.
Definitions
To supply or surround with fortifications; to fortify. The settlers fortressed the town to protect it from raids.
Used attributively to denote strength, security, or resemblance to a fortress.
Definitions
Strong, secure, or resembling a fortress in purpose or appearance. The company adopted a fortress strategy to defend its market share.