▪ I. broaching, vbl. n.
(ˈbrəʊtʃɪŋ)
Also 6 broching(e.
[f. broach v.1 + -ing1.]
1. Piercing, spitting; tapping (a cask), etc.
| 1611 Cotgr., Afforage..wine..paied upon the broaching of euery vessell retailed. 1615 Markham Eng. Housew. ii. ii. (1668) 69 The spitting and broaching of meat. |
2. Introduction, mooting, origination of opinions.
| 1577 Hanmer Anc. Eccl. Hist. (1619) 355 Continuall arguing, and broching of intricate quirks. 1600 Dekker Gentle Craft i. (1862) 10 He sets more discord of a noble house By one day's broaching in his pickthank tales, Than can be salved again in twenty years. 1835 Wordsw. Let. to B. Montagu 1 June, The first broaching of the Reform Bill. |
3. The first liquor run from a cask on tapping it.
| 1659 Gauden Fun. Serm. Bp. Brownrig (1660) 143 The first broachings of a vessel. 1662 Fuller Worthies (1840) III. 171 His mother did not carelessly cast away his youth (as the first broachings of a vessel). |
4. a. The chiselling of stone with a broach.
| 1876 Gwilt Archit. §1914 If broaching is performed without droving..it is never so regular. 1880 Archaeol. Aeliana VIII. 285 The broaching or crosshatching and other conventionalities of the Romans. |
b. The action or operation of enlarging and finishing a drilled hole. (Cf. broach v.1 8.) Also attrib., as broaching machine, broaching machinist.
| 1846 Holtzapffel Turning II. 575 For large works, broaching machines are employed. 1888 Lockwood's Dict. Terms Mech. Engin. s.v., Broaching is chiefly done in a drilling machine or a lathe. 1921 Broaching machinist [see broacher 3]. |
5. Comb. broaching-bit (see quot.); broaching-thurmal, -thurmer, -turner, a chisel for ‘broaching’ stone.
| 1881 Raymond Mining Gloss., Broaching-bit, a tool used to restore the dimensions of a bore-hole which has been contracted by the swelling of the marl or clay walls. |
▪ II. ˈbroaching, ppl. a.
[f. broach v.1 + -ing2.]
Piercing, stabbing.
| 1566 Drant Horace Sat. i. F vij b, Morishe pykes, and brochyng speares. |