Step 1: Definition of 'Bower.'
The word 'bower' refers to a shaded or quiet, peaceful place, typically made by nature. It can also mean a retreat or a resting place surrounded by beauty and tranquility.
Step 2: Symbolism of Bower.
In the context of the poem, the poet uses 'bower' to symbolize a peaceful, serene retreat where one can find solace. It represents the comfort and rest that beauty provides.
Step 3: Conclusion.
A 'bower' is a symbol of peace and calm, a place of rest that allows the mind to rejuvenate. It reflects the restorative power of beauty.
Final Answer: \[ \boxed{\text{In the poem, 'bower' refers to a peaceful and tranquil place, symbolizing the serenity and comfort that beauty provides to the mind and soul.}} \]