1. n. esp. Biol. a minute opening in a surface through which gases, liquids, or fine solids may pass.
Etymology: ME f. OF f. L porus f. Gk poros passage, pore 2. v.intr. (foll. by over)
1. be absorbed in studying (a book etc.).
2 meditate on, think intently about (a subject).
Etymology: ME pure etc. perh. f. OE purian (unrecorded): cf. PEER(1)