Puzzle 12

Italian black vinegar used in salad dressings.

Be mindful; perhaps while looking at a painting.

1934 Best Picture winner: It __ One Night.

A passageway between rooms.

Military aircraft engaged in conflict.

Stop receiving updates to a specific Twitter feed.

__ pen, type of pen used in calligraphy.

Hugely successful American football quarterback.

The mathematical study of shapes.

A pregnant woman's painkilling spinal injection.

In one's heart of hearts.

Photographic company known for its instant cameras.

A young plant.

Her real name is Stefani Joanne Germanotta.