\Cock"horse`\, n.
1. A child's rocking-horse.
         Ride a cockhorse to Banbury cross.    --Mother
                                               Goose.
2. A high or tall horse. [R.]

\Cock"horse`\, a.
1. Lifted up, as one is on a tall horse.
2. Lofty in feeling; exultant; proud; upstart.
         Our painted fools and cockhorse peasantry.
                                               --Marlowe.