Verb

• S: (v) establish, base, ground, found (use as a basis for; found on) "base a claim on some observation"
• S: (v) base (situate as a center of operations) "we will base this project in the new lab"
• S: (v) free-base, base (use (purified cocaine) by burning it and inhaling the fumes)

Adjective

• S: (adj) based (having a base) "firmly based ice"
• S: (adj) based (having a base of operations (often used as a combining form)) "a locally based business"; "an Atlanta-based company"; "carrier-based planes"