What does "leftmost" mean?

superlative form of left: most left; furthest to the left.

Leftmost

Common synonyms include: far left, first constituent, first item, front element, initial constituent, initial element.

adj

adj ·Rare ·Advanced level

Adjective

1
superlative form of left: most left; furthest to the left. form-of, superlative
"Start with the leftmost one and work towards the right."

Adjective

"Start with the leftmost one and work towards the right."

From left + -most.