Meanings

series circuit

planting in a row (trees, flowers, etc.)

parallel circuit

gun deck (ship)

ship of the line

byte string

asterism

train telephone

phonotactics

elementary matrix

island arc

skew-symmetric matrix

Jacobian

column of cars

adjoint matrix

parallelization

heritage railway train (typically running on a scenic tramway previously used for logging or mining)

vactrain

order

Réaumur temperature scale