bugging

Concise Oxford English Dictionary © 2008 Oxford University Press:
bug/bʌɡ/

▶noun

• 1 informal a harmful microorganism.

  ■ an illness caused by a microorganism.

• 2 Entomology an insect of a large order having piercing and sucking mouthparts, including aphids, leafhoppers, cicadas, and many other insects. [Order Hemiptera.]

  ■ chiefly N. Amer. any small insect.

• 3 informal an enthusiasm for something: they caught the sailing bug.

  ■ a concealed miniature microphone as used for secret recording.

• 4 an error in a computer program or system.

▶verb (bugs, bugging, bugged)

• 1 conceal a miniature microphone in.

• 2 informal annoy; bother.

• 3 (bug off) N. Amer. informal go away.

  ■ (bug out) leave quickly.

• 4 (bug out) N. Amer. informal bulge outwards.

– origin C17: of unknown origin.