plural of left field

Stranded in a difficult and helpless position.

(chiefly military) A command to a soldier or other person who is marching: turn ninety degrees to your left!

(intransitive, chiefly military) To turn ninety degrees to one's left, especially in response to a military command while marching.

(idiomatic) An unexpected change from the way things seemed to be going. / Used other than figuratively or idiomatically: see left, turn.

plural of left turn

Third-person singular simple present indicative form of left turn

(archaic) Left-handedness. / (archaic) An awkward or ungainly manner.

plural of left-back

(linear algebra) The vector space of all row vectors whose dot products with the columns of a given matrix are zero; the nullspace of the transpose of a given matrix.