elongate

(verb) make long or longer by pulling and stretching. Synonyms: stretch. Examples: "Stretch the fabric."

(adj) (of a leaf shape) long and narrow. Synonyms: linear.

(adj) having notably more length than width; being long and slender. Synonyms: elongated. Examples: "An elongate tail tapering to a point." "The old man's gaunt and elongated frame."