Ma'anar ƙamus na kalmar "pocketcomb" ƙaramin tsefe ne wanda zai iya shiga cikin aljihu. Yawancin lokaci ana amfani da shi don gyaran gashi, musamman ga maza masu son kiyaye gashin kansu da kyau da tsabta a cikin yini. Ana iya yin tafkunan aljihu daga abubuwa iri-iri, waɗanda suka haɗa da filastik, ƙarfe, ko itace, kuma suna iya samun faɗin haƙora daban-daban da tazara don dacewa da nau'ikan gashi da salo daban-daban.