vamp, to: to improvise on a musical instrument, piano, accordion, etc.
Source: OED

vampire: name given to a goal-keeper thought to be particularly afraid of "crosses."
Source: GTH

vappy: evaporated milk
Source: SL

various veins: Liverpudlianism for varicose veins
Source: BLH

Vera Lynn (rhyming): the chin
Source: LS3

verruca: a type of blister or callous on the sole of  the feet, thought to be caused by ill-fitting hand-me-down shoes.  They are also called Planters Warts.
Source: SL

Village bike, the: girl known to be liberal with her amorous favors
Source: LS3

Ville, the: Pentonville Prison
Source: LS3

virgin's piddle: weak beer or spirits.  See "maiden's water."
Source: SL