on pins and needles
US /ɑn pɪnz ænd ˈniːdlz/
UK /ɑn pɪnz ænd ˈniːdlz/

1.
안절부절못하는, 조마조마한
in a state of anxious expectation; nervously awaiting something
:
•
I've been on pins and needles all day waiting for the test results.
시험 결과를 기다리느라 하루 종일 안절부절못했어.
•
Everyone was on pins and needles as they watched the final penalty kick.
모두가 마지막 페널티킥을 보면서 조마조마했다.