Second of three black keys

• G neighbor
• Piano key above G
• Key just above a G
• Not quite an A
• G sharp's equivalent
• It's a minor third above F
• Key of Chopin's "Heroic Polonaise"
• G sharp
• Center of a black key trio

Wiktionary Word definitions in Wiktionary
adv. (context obsolete English) level with the ground; flat.