Comments:Pek. has a colloquial reading báo and a more standard one: bó. Also means 'to press, press on, suppress' (probably a semantic derivate: 'to make thin'). For initial *b- cf. Min forms: Xiamen, Chaozhou poʔ8, Fuzhou pok8, Jianou pɔ8.
The character is also used for a homonymous word *bāk, which Sch. defines as follows: "meaning much debated; perhaps a -k derivation (distributive) from the stem *ba 夫 'that', hence 'of all places, that one': there".
A usage due to phonetic similarity is witnessed in the reduplication 薄薄 MC phâk-phâk, OC *phāk-phāk 'to go or sound phak-phak'.