* Verb (past tense of "feel"): This is the most common usage. Example: "I felt the warmth of the sun on my face."
* Adjective: This is used to describe something that is sensed by touch. Example: "The fabric had a felt texture."
* Noun: This refers to a type of fabric made from compressed wool fibers. Example: "She bought a hat made of felt."
To determine the part of speech, you need to analyze how "felt" is used in the specific sentence.