vajja : [nt.] nt. fault; a musical instrument. (adj.), which should be avoided; what should be told. || vajjā (v.), he would say.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Vajja1 (nt.) [grd. of vajjati, cp. Sk. varjya] that which should be avoided, a fault, sin D ii.38; S i.221; Vin ii.87 (thūla˚ a grave sin); A i.47, 98; iv.140; Psi.122; Dh 252; VbhA 342 (syn. with dosa and garahitabba); KhA 23 (paṇṇatti˚ & pakati˚), 24 (id.), 190 (loka˚); DA i.181 (=akusala -- dhamma). Freq. in phrase: aṇumattesu vajjesu bhaya -- dassāvin "seeing a source of fear even in the slightest sins" D i.63; S v.187 and passim. -- ˚dassin finding fault Dh 76 (expld in detail at DhA ii.107). -- anavajja & sāvajja, the relation of which to vajja is doubtful, see avajja.

Pali-English Dictionary, TW Rhys Davids, William Stede,

Vajja2 (adj. -- nt.) [cp. Sk. vādya, grd. of vad] 1. "to be said," i. e. speaking D i.53 (sacca˚=sacca -- vacana DA i.160). See also mosa -- vajja. -- 2. "to be sounded," i. e. musical instrument J i.500 (˚bheri).

Pali-English Dictionary, TW Rhys Davids, William Stede,