The Collaborative International Dictionary of English v.0.48:

Effeminacy \Ef*fem"i*na*cy\, n.; pl. Effeminacies. [From
   Effeminate.]
   Characteristic quality of a woman, such as softness,
   luxuriousness, delicacy, or weakness, which is unbecoming a
   man; womanish delicacy or softness; -- used reproachfully of
   men. --Milton.
   [1913 Webster]