suit the act of wooing; courtship.
well-apparell'd April clothed or adorned with images of new growth associated with the spring, such as leaves and blossom. Contrast with "limping winter."
sirrah a contemptuous term of address, here used to indicate the difference in social status between Capulet and his servant.
new infection to thy eye Benvolio continues to encourage Romeo to look for another love. Ironically, Romeo and Juliet fall in love at first sight.
plantain leaf the leaf was used to heal cuts and bruises. Romeo replies sarcastically that Benvolio's suggestion of a cure for Romeo's love melancholy would be as effective as applying a plantain leaf.
unattainted unprejudiced.
transparent heretics Romeo says that if he saw another woman more beautiful than Rosaline his tears would turn to fire and burn his eyes as "transparent heretics" for lying.
poised balanced, weighed.
crystal scales Romeo's eyes are like the pans on a set of crystal scales.
