1. (noun) a steep nose-down descent by an aircraft

• dive
• nose dive

1. (verb) plunge nose first; drop with the nose or front first, of aircraft

• air
• air travel
• aviation

1. (noun) a sudden sharp drop or rapid decline

• decline
• diminution

2. (noun) a steep nose-down descent by an aircraft

• descent

3. (verb) plunge nose first; drop with the nose or front first, of aircraft

• dive
• plunge
• plunk

1. (noun) a steep nose-down descent by an aircraft

• power dive