Answer:

tapon

Answer	Crossword Clue
TAPON	Strike lightly
TAPON	Hit lightly
TAPON	Hit lightly and repeatedly

TAPON	Hit lightly, as with a pointer
TAPON	Hit lightly, as glass
TAPON	Strike lightly and repeatedly
TAPON	Knock at gently
TAPON	Something to do to a shoulder or the brakes