As a noun:
* The loom cast a long shadow across the field, as the storm approached.
* She was a skilled weaver, her fingers flying across the loom.
* The ancient loom was still used to create intricate tapestries.
As a verb:
* The threat of war loomed over the nation.
* The deadline for the project looms large.
* As I walked through the forest, a sense of danger loomed.
In a figurative sense:
* The mountain range loomed against the clear blue sky.
* Her future loomed uncertain, full of potential opportunities and unknown challenges.
* The consequences of his actions loomed larger than ever.
Remember that the specific meaning of "loom" will depend on the context of the sentence.