n.
 a strong feeling of wanting to have something or wishing for something to happen. 
▸strong sexual feeling or appetite.
 ▸something desired.
v.
 strongly wish for or want. 
▸want sexually.
 ▸archaic express a wish to (someone).
Etymology
  ME: from OFr. desir (n.), desirer (v.), from L. desiderare (see desiderate).