sissy

Short definition from Wiktionary

Noun

1. 1
   An effeminate boy or man.
2. 2
   A timid, unassertive or cowardly person.
3. 3
   A male crossdresser who adopts feminine behaviours.
4. 4
   Sister; often used as a term of address
5. 5
   Urination; urine.

Adjective

1. 1
   Effeminate.
2. 2
   Cowardly.

Verb

1. 1
   To urinate.
2. 2
   To sissygasm (reach orgasm solely by penetration of the anus).

Proper noun

1. 1
   A diminutive of the female given name Cecilia.