- n.: Phylum, door, gate, gateway, ostium, movable barrier that closes the entrance to a building, room, cupboard, car, etc, portal, doorway or gateway, esp a grand and imposing one, a primer (for chess, bridge, etc.), field of endeavor, hilus, division, shutter, subkingdom
- v.: have an elementary knowledge of ( a learning), get ready for more profound study (of a subject)
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