Wordnet 3.0
NOUN (1)
1.
a square plate bearing the letter L that is attached to both ends of a car to indicate that the driver is a learner;
The Collaborative International Dictionary of English v.0.48:
L-plate \L-plate\ n.
a square plate bearing the letter L that is attached to both
ends of a car to indicate that the driver is a learner.
[British]
[WordNet 1.5]
WordNet (r) 3.0 (2006):
L-plate
n 1: a square plate bearing the letter L that is attached to
both ends of a car to indicate that the driver is a learner