From Wiktionary, the free dictionary
kaluban (Baybayin spelling ᜃᜎᜓᜊᜈ᜔)
- sheath or scabbard of a sword or other bladed weapon
- Synonym: bayna
2001, Saliksik ng mga akdang Maguindanaon, Teduray, Bagobo, at Manobo[1], Komisyon sa Wikang Filipino, →ISBN, page 197:Nakilala niya ito na ilang palamuting ginto mula sa kaluban ng espada ng kanilang ama.- He recognized them as the gold decorations from the sword scabbard of his father.
- (euphemistic, anatomy) vagina
- “kaluban”, in Pambansang Diksiyonaryo | Diksiyonaryo.ph, Manila, 2018