Do swaddies find it boring? (5)
I believe the answer is:
drill
'boring?' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for drill that I've seen before include "Hole-making tool" , "Instruct" , "DIY tool" , "Bore; small furrow" , "Twill-weave cotton cloth" .)