I. by ‧ pass 1 /ˈbaɪpɑːs $ -pæs/ BrE AmE noun [countable]
1 . (heart) bypass operation/surgery an operation to direct blood through new ↑ vein s (=blood tubes) outside the heart because the veins in the heart are blocked or diseased:
a triple heart bypass operation
2 . a road that goes around a town or other busy area rather than through it ⇨ ring road
3 . technical a tube that allows gas or liquid to flow around something rather than through it
II. bypass 2 BrE AmE verb [transitive]
1 . to go around a town or other busy place rather than through it:
Interstate 8 bypasses the town to the north.
2 . to avoid obeying a rule, system, or someone in an official position:
Francis bypassed his manager and wrote straight to the director.