weldyoudaoicibaDictYouDict[weld 词源字典]
weld: [16] Weld is ultimately the same verb as well (as in ‘The tears welled up in his eyes’). This originally meant ‘boil, melt’, but in the 15th century (perhaps under the influence of Swedish välla ‘gush, weld’) it began to be used for ‘fuse metal by heating’. Weld itself presumably arose from the use of the past form welled as a present form.
=> well[weld etymology, weld origin, 英语词源]
weld (n.2)youdaoicibaDictYouDict
"joint formed by welding," 1831, from weld (v.).
weld (v.)youdaoicibaDictYouDict
1590s, "unite or consolidate by hammering or compression, often after softening by heating," alteration of well (v.) "to boil, rise;" influenced by past participle form welled. Related: Welded; welding.
weld (n.1)youdaoicibaDictYouDict
plant (Resedo luteola) producing yellow dye, late 14c., from Old English *wealde, perhaps a variant of Old English wald "forest" (see wold). Spanish gualda, French gaude are Germanic loan-words.