(past and past participle underlaid) [with object]
place something under (something else), especially to support or raise it:the green fields are underlaid with limestonethe synth arpeggios start, underlaid by a lovely theme on bass
1something placed under or behind something else, especially material laid under a carpet for protection or support:providing the proper underlay gives the carpet extra lifea polka-dot skirt with net underlay
2 Music the manner in which the words are fitted to the notes of a piece of vocal music.
