Answer:
It's hardly noticeable.
Step-by-step explanation:
A figurative language can be defined as the language used to give another meaning to a phrase or sentence which is different from the literal meaning.
Figurative language makes use of figures of speech. Example of such figures of speech includes: Metaphor, Hyperbole, Oxymoron, Simile, Irony e.t.c.
In the question above , we are given a figure of speech: "a lump as big as a pin"
This figure of speech is a Simile. Simile is a figure of speech used in figurative language that is used to compare two distinct objects or words that have no relationship with one another. It makes use of words as and like to make it's comparison between two things.
In the figure of speech given in the question the two things that are compared are:
a) A lump : A lump is a sizeable and visible swelling or a sizeable accumulation that solidifies. A lump is also visible.
b) A pin: This is a very tiny object that is used to attach things together.
When we compare a lump that is obviously visible and something you can see and feel with a tiny object such as a pin then it means the lump is barely visible.
Therefore, the meaning of the figurative language "a lump as big as a pin" is "It's hardly noticeable".