Meanings

street parking

path to Hades

age forty

asphalt road

ornithine cycle

glyoxylate cycle

Krebs cycle

gate circuit

tricarboxylic acid cycle

pulse circuit

flip-flop circuit

bridge circuit

operation circuit

circuit element

street crime

(on the) aisle

waveguide (usually optical)

(wishing someone) bon voyage

sailing before the wind

the road home