A mountain lion or cougar (Puma concolor). / (by extension) Any feline belonging to the genus Puma. / (slang) A woman in her 20s or 30s who seeks relationships with younger men; a younger cougar.

(sciences) Abbreviation of telomeric repeat-binding factor. / (US military) Abbreviation of terrain flight (“flight close to the ground, to avoid enemy detection or fire”).

Producing abrasion; rough enough to wear away the outer surface. / Being rough and coarse in manner or disposition; overly aggressive and causing irritation.

(obsolete) Resemblance; likeness; appearance. / (obsolete) An assembling; assemblage.